Applications of time series analysis in epidemiology: Literature review and our experience during COVID-19 pandemic

Time series analysis is a valuable tool in epidemiology that complements the classical epidemiological models in two different ways:Prediction and forecast.Prediction is related to explaining past and current data based on various internal and external influences that may or may not have a causative role.Forecasting is an exploration of the possible future values based on the predictive ability of the model and hypothesized future values of the external and/or internal influences.The time series analysis approach has the advantage of being easier to use(in the cases of more straightforward and linear models such as Auto-Regressive Integrated Moving Average).Still,it is limited in forecasting time,unlike the classical models such as Susceptible-Exposed-Infectious-Removed.Its applicability in forecasting comes from its better accuracy for short-term prediction.In its basic form,it does not assume much theoretical knowledge of the mechanisms of spreading and mutating pathogens or the reaction of people and regulatory structures(governments,companies,etc.).Instead,it estimates from the data directly.Its predictive ability allows testing hypotheses for different factors that positively or negatively contribute to the pandemic spread;be it school closures,emerging variants,etc.It can be used in mortality or hospital risk estimation from new cases,seroprevalence studies,assessing properties of emerging variants,and estimating excess mortality and its relationship with a pandemic.

Molecular Epidemiology and Sequencing of the G-L Intergenic Region of Rabies Viruses Isolated in China

一组 25 个狂犬病病毒(RABV ) ，从 24 条狗和一个人的盒子恢复了，在在 2004 和 2006 之间的中国从各种各样的区域被收集。G-L intergenic 区域的基因、种系发生的分析在 25 街 RABV 被执行孤立， CTN 疫苗 7 拉紧代。学习基于 519 bp 核苷酸顺序的比较，包含 G-L intergenic 区域。中国街紧张的核苷酸顺序相同从 95.5% ～ 100% 。种系发生的分析证明中国的所有孤立清楚地在 Lyssavirus 遗传型 1 支持了所有中国病毒的放置，他们根据他们的地理起源是分布式的。所有仔细中国紧张被联系，但是他们能仍然被划分成二个组：一些街紧张和一些 CTN 紧张。这研究基于 G-L Intergenic 区域的序列关于狂犬病病毒的分子的传染病学介绍细节。关键词狂犬病病毒 - 分子的传染病学 - G-L intergenic 区域 - 中国 CLC 数字 R373.33 基础条款：第 10 国家 five-year-plan (2004BA718 b03 ) 的关键技术 R&D

Spatiotemporal Analysis and Predictive Modeling of Rabies in Tennessee

Among viruses, Rhabdovirus, more commonly known as rabies, is largely monitored throughout landscapes because of its known risks and deadliness. While vaccination and education efforts have been enforced and apparently successful in the past decades, many questions still exist in some regions about the virus’s spread and potential. In the United States, the state of Tennessee’s Department of Health has documented rabies reports from the 1940s-2010s, but not as many spatial analyses have been performed to further map and assess rabid animals in this variable landscape. Our study proposed to create distribution and density models to give an idea of the types of locations rabid animals have consistently been found. A predictive model was also created using software that simulated landscape fragmentation and habitat connectivity, to provide further insight for potential disease spread. Our results display that Tennessee’s central region, which is a more homogenous landscape, tended to host a lot of rabid animals and maintained a rather consistent distribution throughout the years. The predictive model was simulated on a less homogenous landscape and displayed that spread potential can be affected by natural barriers. Each of these spatial results could be of service in future disease monitoring, hopefully for the benefit of wildlife and people alike.

Epidemic and Maintenance of Rabies in Chinese Ferret Badgers (Melogale moschata) indicated by Epidemiology and the Molecular Signatures of Rabies Viruses

An epidemic of Chinese ferret badger-associated human rabies was investigated in Wuyuan county, Jiangxi province and rabies viruses isolates from ferret badgers in different districts in Jiangxi and Zhejiang provinces were sequenced with their nucleotides and amino acids and aligned for epidemiological analysis. The results showed that the human rabies in Wuyuan are only associated with ferret badger bites; the rabies virus can be isolated in a high percentage of ferret badgers in the epidemic areas in Jiangxi and Zhejiang provinces; the isolates share the same molecular features in nucleotides and have characteristic amino acid signatures, i.e., 2 sites in the nucleoprotein and 3 sites in the glycoprotein, that are distinct from virus isolates from dogs in the same region. We conclude that rabies in Chinese ferret badgers has formed an independent transmission cycle and ferret badgers may serve as another important rabies reservoir independent of dog rabies in China.

Analysis of Epidemiological Investigations and Responses to Human Rabies Deaths in Côte d’Ivoire, 2021

Rabies is an infectious disease that almost always leads to death as soon as the first signs appear, and is still endemic in several regions, including Côte d’Ivoire. Epidemiological investigations are carried out and response measures implemented in the event of any death from human rabies. However, the quality of these investigations does not always allow the adoption of response measures. The aim of this work was to evaluate the reports of epidemiological investigations and response actions carried out during the occurrence of human rabies deaths from 2016 to 2018. This was a cross-sectional study that took place from April to September 2021 at the National Institute of Public Hygiene and focused on human rabies deaths notified from 206 to 2018. Of sixty-one (61) human rabies deaths recorded, sixty (60) were investigated, among which fifty-nine (59) deaths had been subject to response. Most deaths occurred in rural areas (75%), and the main vector was the dog (98%). Several shortcomings were noted: response actions were not carried out promptly;joint interventions bringing together human and animal health professionals were rare, there was little communication about rabies to communities (36%), and very little vaccination of the vector, the source of the disease (12%);an almost total absence of capacity-building for local players (7%);the health districts of Abobo-Ouest, Bondoukou, Divo and Fresco, which had regularly recorded human rabies deaths, had not benefited from dog vaccination, which is supposed to break the circulation of the virus. The persistence of rabies deaths in the health districts could probably be linked to these shortcomings. Faced with these realities, it is essential to strengthen the epidemiological investigation capacities of the players involved, in order to improve the quality of investigations and ensure an effective response.

Analysis of Epidemiological Investigations and Responses to Human Rabies Deaths in Côte d’Ivoire, 2021

Rabies is an infectious disease that almost always leads to death as soon as the first signs appear, and is still endemic in several regions, including Côte d’Ivoire. Epidemiological investigations are carried out and response measures implemented in the event of any death from human rabies. However, the quality of these investigations does not always allow the adoption of response measures. The aim of this work was to evaluate the reports of epidemiological investigations and response actions carried out during the occurrence of human rabies deaths from 2016 to 2018. This was a cross-sectional study that took place from April to September 2021 at the National Institute of Public Hygiene and focused on human rabies deaths notified from 206 to 2018. Of sixty-one (61) human rabies deaths recorded, sixty (60) were investigated, among which fifty-nine (59) deaths had been subject to response. Most deaths occurred in rural areas (75%), and the main vector was the dog (98%). Several shortcomings were noted: response actions were not carried out promptly;joint interventions bringing together human and animal health professionals were rare, there was little communication about rabies to communities (36%), and very little vaccination of the vector, the source of the disease (12%);an almost total absence of capacity-building for local players (7%);the health districts of Abobo-Ouest, Bondoukou, Divo and Fresco, which had regularly recorded human rabies deaths, had not benefited from dog vaccination, which is supposed to break the circulation of the virus. The persistence of rabies deaths in the health districts could probably be linked to these shortcomings. Faced with these realities, it is essential to strengthen the epidemiological investigation capacities of the players involved, in order to improve the quality of investigations and ensure an effective response.

A 10-year review and epidemiology of animal bite cases in Gerash city, south of Iran: A retrospective cross-sectional study

Objective:To determine the temporal trend and epidemiology of animal bite cases in Gerash City,Iran.Methods:This retrospective cross-sectional study analyzed 630 cases of people with animal bites between 2011 and 2021 in Gerash City.The collected data were analyzed using Chi-square test.Results:The mean age of victims was(30.9±17.5)years.80.54%Of victims were male,39.70%were self-employed,and 64.60%were adults(≥18 years).Most cases of bites occurred in 2019(91 cases),2020(74 cases)and 2021(87 cases),and most of the bites were related to the upper limbs(62.70%).Most of the wounds were superficial(78%),most of the biting animals were domestic animals(91.74%),and most of the victims had Iranian nationality(97.62%).Conclusions:Given the increasing trend of animal bites in Gerash City,health authorities should carry out basic measures such as education and awareness among the public,especially at-risk groups such as adult males.Additionally,since most cases of bites are due to dogs,it seems necessary to plan for vaccination of dogs,especially those with owners.

Molecular epidemiological study of animal rabies in Kazakhstan

Rabies is a serious public health issue in Kazakhstan, with high economic impact and social burden. As part of a routine surveillance, 31 rabies-positive brain specimens taken from livestock(cattle) and carnivores(dogs, foxes, and cats)during 2013–2021 were subject to viral sequencing. Phylogenetic and Bayesian analysis were performed using obtained rabies virus(RABV) sequences. All 31 strains of RABV candidate belonged to the Cosmopolitan clade, of which 30strains belonged to steppe-type subclade, and 1 dog strain belonged to Other subclade. The 31 strains did not diverge from RABV strains in Kazakhstan and neighboring countries, including Russia, Mongolia, and China, suggesting that animal rabies has close relationship and transmission between borders. Fox-originated strains and cattle strains shared similar sequence signature, and some animal rabies cases had space–time intersection, showing that infected foxes were a major transmission source of cattle rabies in different Kazakhstan regions. Besides, free-roaming dogs played a pivotal role in rabies epizootics of cattle in Kazakhstan. The recent spread of animal rabies presents an increasing threat to public health, and provides updated information for improving current control and prevention strategies at the source for Kazakhstan and neighboring countries.

A Spatial Epidemiology Case Study of Coronavirus (COVID-19) Disease and Geospatial Technologies

Spatiotemporal pattern analysis provides a new dimension for data interpretation due to new trends in computer vision and big data analysis. The main aim of this study was to explore the recent advances in geospatial technologies to examine the spatiotemporal pattern of COVID-19 at the Public Health Unit (PHU) level in Ontario, Canada. The spatial autocorrelation results showed that the incidence rate (no. of confirmed cases per 100,000 population–IR/100K) was clustered at the PHU level and found a tendency of clustering high values. Some PHUs in Southern Ontario were identified as hot spots, while Northern PHUs were cold spots. The space-time cube showed an overall trend with a 99% confidence level. Considerable spatial variability in incidence intensity at different times suggested that risk factors were unevenly distributed in space and time. The study also created a regression model that explains the correlation between IR/100K values and potential socioeconomic factors.

Rabies in a postpandemic world:resilient reservoirs,redoubtable riposte,recurrent roadblocks,and resolute recidivism

Rabies is an ancient disease.Two centuries since Pasteur,fundamental progress occurred in virology,vaccinology,and diagnostics—and an understanding of pathobiology and epizootiology of rabies in testament to One Health—before common terminological coinage.Prevention,control,selective elimination,and even the unthinkable—occasional treatment—of this zoonosis dawned by the twenty-first century.However,in contrast to smallpox and rinderpest,eradication is a wishful misnomer applied to rabies,particularly post-COVID-19 pandemic.Reasons are minion.Polyhostality encompasses bats and mesocarnivores,but other mammals represent a diverse spectrum of potential hosts.While rabies virus is the classical member of the genus,other species of lyssaviruses also cause the disease.Some reservoirs remain cryptic.Although global,this viral encephalitis is untreatable and often ignored.As with other neglected diseases,laboratory-based surveillance falls short of the notifiable ideal,especially in lower-and middleincome countries.Calculation of actual burden defaults to a flux within broad health economic models.Competing priorities,lack of defined,long-term international donors,and shrinking local champions challenge human prophylaxis and mass dog vaccination toward targets of 2030 for even canine rabies impacts.For prevention,all licensed vaccines are delivered to the individual,whether parenteral or oral–essentially‘one and done’.Exploiting mammalian social behaviors,future‘spreadable vaccines’might increase the proportion of immunized hosts per unit effort.However,the release of replication-competent,genetically modified organisms selectively engineered to spread intentionally throughout a population raises significant biological,ethical,and regulatory issues in need of broader,transdisciplinary discourse.How this rather curious idea will evolve toward actual unconventional prevention,control,or elimination in the near term remains debatable.In the interim,more precise terminology and realistic expectations serve as the norm for diverse,collective constituents to maintain progress in the field.

Epidemiological Facies of Human Rabies Deaths in Côte d’Ivoire from 2016 to 2022

Introduction: Rabies is a highly fatal viral disease outside the post-exposure prophylaxis (PEP). Data from previous studies and reports from the rabies center show that cases of death from human rabies are regularly reported, despite training measures for health workers, awareness-raising and communities, and the availability of vaccines. Objectives: The aim of this study was to analyse the determinants of human rabies deaths in Côte d’Ivoire from 2016 to 2022. Method: A retrospective cross-sectional qualitative study was carried out from January to August 2023 on all the records of patients who died of human rabies at the Treichville Rabies Center from 2016 to 2022. An analysis of the rabies center’s annual activity reports from 2016 to 2022 was also carried out in order to complete the information gathered from the files. Results: The socio-demographic characteristics showed that out of 148 deaths, children accounted for 47.97% (71) and 66.22% (98) of rabies deaths were male, with an M/F sex ratio of 1.96. In terms of clinical characteristics, in 97.30% (144) of cases, the deceased had presented with furious rabies, and analysis by the Pasteur Institute of Côte d’Ivoire laboratory confirmed 101 cases (92.66%) of human rabies. Geographical distribution showed that cases of human rabies were recorded in 56 health district, and 64% (94) of the deceased lived in rural areas. The main causes of the occurrence of rabies were essentially non-use of post-exposure prophylaxis (PEP) and missed vaccination due to ignorance. Conclusion: In view of these results, control strategies and interventions need to be adapted to the epidemiological characteristics of the disease, using a community-based approach with a view to eliminating dog-transmitted rabies by 2030.

Clinical Analysis of 137 Cases of Fungal Keratitis

Objective: To analyze the epidemiology, clinical diagnosis and treatment of fungal keratitis (FK) in hospitalized patients at the First Affiliated Hospital of Yangtze University in recent years. Methods: A retrospective investigation was conducted on the data of 137 cases of FK in our hospital from January 2019 to December 2022. The epidemiological characteristics, identification results of fungal strains, clinical treatment, and prognosis of the patients were analyzed. Results: Among the 137 FK patients, 89 were males and 48 were females, and the ratio of male to female was 1.85:1, The age of onset was the largest number of patients in 50-59 years old and 60-69 years old. The disease occurred most in autumn, winter and summer farming season (from September to December, January, May, June). 72 cases (52.6%) had a clear history of corneal injury, and 43 cases (31.4%) had a history of plant injury. Other risk factors include eye surface diseases, ophthalmic surgery, and wearing corneal contact lenses. The top three pathogens were fusarium (38.7%), aspergillus (23.3%), and alternaria (17.5%). 101 eyes showed improvement or cure after treatment with medication, 9 eyes underwent corneal stromal injection, 11 eyes were covered with conjunctival flap covering or amniotic membrane transplantation, 12 eyes were covered with corneal transplantation, and enucleation of ocular contents was performed in 4 eyes;Visual acuity was improved or maintained in 123 patients (about 89.8%). Conclusions: The incidence of FK in our hospital was mostly middle-aged and elderly men, mostly caused by corneal injury in the process of agricultural labor. The pathogens were mainly fusarium and aspergillus. The preferred treatment was medication, with severe cases requiring combined surgical treatment. Most patients can maintain or improve their vision after treatment.

Epidemiology and Mutational Analysis of Global Strains of Crimean-Congo Haemorrhagic Fever Virus

Crimean-Congo hemorrhagic fever (CCHF) is a severe illness with high fatality.Cases are reported in several countries in Africa,Europe,the Middle East,and Asia.Phylogenetic analyses based on the virus S (nucleocapsid),M (glycoprotein),and L (polymerase) genome segments sequences indicate distinct geographic lineages exist but their specific genetic characteristics require elucidation.In this work we collected all full length S segment sequences and generated a phylogenetic tree based on the alignment of these 62 samples.We then analyzed the alignment using entries from AAIndex,the Amino Acid Index database,to identify amino acid mutations that performed significant changes in charge,pka,hydropathy and side chain volume.Finally,we mapped these changes back to the tree and alignment to identify correlated mutations or sites that characterized a specific lineage.Based on this analysis we are able to propose a number of sites that appear to be important for virus function and which would be good candidates for experimental mutational analysis studies.

Characterization of Avian Influenza A(H7N9) Virus Prevalence in Humans and Poultry in Huai′an,China：Molecular Epidemiology,Phylogenetic,and Dynamics Analyses

Objective To trace the source of human H7N9 cases in Huai＇an and elucidate the genetic characterization of Huai＇an strains associated with both humans and birds in live poultry market.Methods An enhanced surveillance was implemented when the first human H7N9 case was confirmed in Huai＇an.Clinical specimens,cloacal swabs,and fecal samples were collected and screened by real-time reverse transcription-polymerase chain reaction（RT-PCR） for H7N9 virus.The positive samples were subjected to further RT-PCR and genome sequencing.The phylodynamic patterns of H7N9 virus within and separated from Huai＇an and evolutionary dynamics of the virus were analyzed.Results Six patients with H7N9 infection were previously exposed to live poultry market and presented symptoms such as fever（〉38.0 °C） and headaches.Results of this study support the hypothesis that live poultry markets were the source of human H7N9 exposure.Phylogenetic analysis revealed that all novel H7N9 viruses,including Huai＇an strains,could be classified into two distinct clades,A and B.Additionally,the diversified H7N9 virus circulated in live poultry markets in Huai＇an.Interestingly,the common ancestors of the Huai＇an H7N9 virus existed in January 2012.The mean nucleotide substitution rates for each gene segment of the H7N9 virus were（3.09-7.26）×10-3 substitutions/site per year（95% HPD：1.72×10-3 to 1.16×10-2）.Conclusion Overall,the source of exposure of human H7N9 cases in Huai＇an was live poultry market,and our study highlights the presence of divergent genetic lineage of H7N9 virus in both humans and poultry specimens in Huai＇an.

Time Series and Spatial Epidemiological Analysis of the Prevalence of Iodine Deficiency Disorders in China

Objective To recognize the spatial and temporal characteristics of iodine deficiency disorders(IDD),China national IDD surveillance data for the years of 1995–2018 were analyzed.Methods Time series analysis was used to describe and predict the IDD related indicators,and spatial analysis was used to analyze the spatial distribution of salt iodine levels.Results In China,the median urinary iodine concentration increased in 1995–1997,then decreased to adequate levels,and are expected to remain appropriate in 2019–2022.The goiter rate continually decreased and is expected to be maintained at a low level.Since 2002,the coverage rates of iodized salt and the consumption rates of qualified iodized salt(the percentage of qualified iodized salt in all tested salt) increased and began to decline in 2012;they are expected to continue to decrease.Spatial epidemiological analysis indicated a positive spatial correlation in 2016–2018 and revealed feature regarding the spatial distribution of salt related indicators in coastal areas and areas near iodine-excess areas.Conclusions Iodine nutrition in China showed gradual improvements.However,a recent decline has been observed in some areas following changes in the iodized salt supply in China.In the future,more regulations regarding salt management should be issued to strengthen IDD control and prevention measures,and avoid the recurrence of IDD.

Molecular Epidemiology and Vaccine Compatibility Analysis of Seasonal Influenza Viruses in Wuhan, 2016–2019

Influenza viruses(FLUV)cause high morbidity and mortality annually in the world and pose a serious threat to the public health.Wuhan,as an important transportation hub in China,has a dense population and suitable climate,which also lays a major hidden danger for the outbreak of influenza.To survey and characterize the seasonal FLUV in Wuhan during 2016–2019,we collected 44,738 throat swabs,among which 15.5%were influenza A(FLUAV)positive,6.1%influenza B(FLUBV)and 0.3%co-infection.By monitoring FLUV in each month from June 2016 to May 2019,different with the previously seasonality pattern,only a single influenza peak was appeared in winter of 2017–2018 and 2018–2019,respectively.These data indicated that the complex circulation pattern of seasonal influenza in Wuhan.In addition,we found the age group was skewed towards 5–14 years group whose activity were mostly school based,which suggested school may be an important place for influenza outbreaks.Meanwhile,phylogenic analysis revealed that two subtypes(subclade 3C.2 a2 and 3C.2 a1b)of A(H3N2)were circulating in Wuhan and there was an obvious transition in 2018 because the two subclades were detected simultaneously.Furthermore,by estimating the vaccine effectiveness,we found that the vaccine strain of FLUAV didn’t seem to match very well the current epidemic strain,especially A(H3N2).Hence,more accurate prediction of seasonal outbreak is essential for vaccine design.Taken together,our results provided the current information about seasonal FLUV in Wuhan which form the basis for vaccine updating.

Pilot-Scale Production of Lyophilized Inactivated Rabies Vaccine Candidate in Vero Cells under Fully Animal Component-Free Conditions Using Microcarrier Technology and Laboratory Animal Trials

The upstream process was carried out in an animal component-free medium on Cytodex 1 microcarriers. Recombinant trypsin is a non-animal derived protease used as an alternative to animal-derived trypsin. To inactivate recombinant trypsin, a soybean trypsin inhibitor (STI) should be added to the medium. A protocol was first tested in T-flasks and then passaged to 500 mL and 3 L spinner flasks. Cell detachment was completed in 10 - 12 min, and 0.4 g/L STI was added to a 3L spinner, and cells were transferred into a 30 L stirred tank bioreactor. On day 5, the cell density had reached its maximum (around 1.8 × 106 cells/mL). At an MOI of 0.3 with serum-free medium conditions, cell infection yielded a maximal rabies virus titer of 1.82 × 107 FFU/mL at 5 days. All cell culture conditions and virus growth kinetics in serum-free media were investigated. In conclusion, Vero cells were grown on Cytodex 1 with serum-free media and a high amount of rabies virus was obtained. A mouse challenge was used to determine the immune response to an inactivated rabies virus vaccine candidate. Also, we evaluated inactive rabies vaccine candidate safety, and immunogenicity in mice, sheep, horses, and cattle. We found that no horses, sheep, or cattle who were given vaccine IM at 3.2 IU/dose exhibited any clinical sign of disease and all developed high VNA titers (up to 10.03 IU/mL) by 3 - 4 WPI. After the accelerated stability studies, the lyophilized inactivated rabies vaccine candidate showed enough antigenic potency (2.6 IU/mL) in the mouse challenge test. Also, 18-month long-term stability studies showed enough immune response (1.93 IU/mL) on day 14. The activity of the vaccine candidate showed a good immune response and safety criteria that meet WHO requirements. This is the first pilot-scale mammalian cell-based viral rabies vaccine production study in Türkiye that used microcarriers.

Molecular Epidemiology of Nontuberculous Mycobacteria in a German CF Center and Clinical Course of NTM Positive Patients

Goal of this study was to analyse the clinical course of cystic fibrosis (CF) patients with nontuberculous mycobacteria (NTM) in their respiratory secretions and to investigate the molecular epidemiology of the most prevalent NTM species by multilocus sequence analysis (MLSA). The respiratory specimen and the clinical parameters forced expiratory volume in one second (FEV1), body-mass-index (BMI), erythrocyte sedimentation rate (ESR) 1 h and immunoglobulin G (IgG) of 357 CF patients, 0 - 52.4 years, mean FEV1 2009 81.5% pred were analysed between 1998 and 2010. In 13 patients NTM were detected. 12 of 13 patients carried M. abscessus, for one patient the NTM species was not characterized. 4 patients carried a second NTM species (M. avium, M. chelonae (2x), M. intracellulare). 6 patients exhibited a significant decline in FEV1, however changes in BMI, IgG and ESR were discordant. Molecular genotyping of M. abscessus isolates revealed a unique MLSA pattern in 6 patients. 2 patients harboured identical strains, and one patient a closely related strain. Whether the presence of identical strains is attributed to the acquisition of NTM clones from common environmental sources or to patient-to-patient transmission cannot be definitely clarified. Although cross-in- fection of the three patients with identical/closely related strains in the present cohort is highly unlikely, we recommend strict hygiene measures for all CF patients harbouring NTM.

Semen analysis from an epidemiologic perspective

The fifth edition of the World Health Organization （WHO） manual for semen analysis includes for the first time reference values for human semen characteristics. This paper considers whether such values will help to resolve the intensely debated data indicating temporal and geographical shifts in sperm counts and hypotheses that anthropogenic activities that result in the release of chemicals into the environment are detrimental to male reproductive health. The reasons that these reference values will not fulfil these purposes are also explained. Although established reference values for semen characteristics are of limited value in analytical epidemiologic research, the WHO guidelines are of utmost importance for supporting the development of appropriate research protocols. Moreover, in spite of its limitations, semen analysis is still a useful research tool in epidemiological research, and no superior alternatives are on the horizon.

Research Advances of Epidemiological Characteristics and Diagnosis Technology of Rabies Virus

Rabies is a zoouosis caused by rabies virus, which has been characterized by infection of central nervous system. Rabies virus, which can cause fatal in- fections in humans and other mammals, has the characteristic of neurotropism, and the mortality caused by rabies is almost 100%. Routine diagnosis of rabies in- clude clinical symptoms, while a final diagnosis depends on laboratory diagnostic methods, such as etiological diagnosis, serological diagnosis and molecular biologi- cal diagnosis. As a zoouodc infectious disease, rabies presents a global distribution situation, and the deaths caused by rabies virus infection in China ranks the sec- ond place in the world. Therefore, strengthening the recognition of disease etiology and epldemiology is very important to comprehensive prevention measures of rabi- es. The author mainly introduced the research progress on pathogen, epidemiology and diagnosis technology of rabies virus at home and abroad. In addition, the advantages and disadvantages of various methods were compared respectively, in order to provide a scientific basis for further study and rapid diagnosis of rabies.