Introduction: The Infection Control Law in Japan does not cover monitoring of human metapneumovirus (HMPV). Therefore, its epidemiology is not well known. However, rapid diagnostic testing for this virus has been reim...Introduction: The Infection Control Law in Japan does not cover monitoring of human metapneumovirus (HMPV). Therefore, its epidemiology is not well known. However, rapid diagnostic testing for this virus has been reimbursed by public health insurance in Japan since 2014. One case of acute encephalitis caused by HMPV was reported in April 2017 in Ibaraki. All schools in Ibaraki prefecture started to participate in the (Nursery) School Absenteeism Surveillance System ((N)SASSy) in 2009. All nursery schools started to use it in 2012. Methods: We specifically examine its seasonality and incidence by age. The study period extends from October 1, 2014 through May 31, 2017. Results: In total, (N)SASSy received 187 cases during the period. Spring and early summer were apparently the high season. The highest incidence was 36 cases in April 2015. The incidence among zero and one year olds was higher in 2017 than in the same season among 2014-2016. The necessary effort to download data from (N)SASSy, show these figures, and confirm the situation and background was a few minutes. Discussion: Rapid diagnostic testing for HMPV elucidated its epidemiology for the first time. Moreover, timely information sharing through (N)SASSy led the Ibaraki prefectural office to publish a reminder in July 2017 about the HMPV outbreak situation and to encourage precautions against it by nursery schools.展开更多
<strong>Objective: </strong>To determine the prevalence of human metapneumovirus (hMPV) among children with acute respiratory tract infection and the correlation between (hMPV) and age group. <strong>...<strong>Objective: </strong>To determine the prevalence of human metapneumovirus (hMPV) among children with acute respiratory tract infection and the correlation between (hMPV) and age group. <strong>Methods: </strong>This prospective, descriptive cross-sectional hospital-based study is carried out from January to May 2019 among children from under five years old who were admitted to El-Obeid pediatric teaching Hospital, North kordofan, Sudan with acute respiratory tract infection. <strong>Results: </strong>Fifty hospitalized children with acute respiratory tract infection were enrolled in the study. Two of these (4%) were tested positive for (hMPV) in the age group (7 months - 2 years) old. Moreover, the study showed no significant correlation between infection with (hMPV) and age.展开更多
患者女性,48岁,2023年6月13日主因新型冠状病毒肺炎住院,核酸转阴后,于6月19日出院。6月22日再次出现发热,体温最高38.1℃,伴畏寒,肌肉酸痛,胸部CT提示双肺多发斑片状磨玻璃影、实变影,部分较前吸收,部分较前新发,于6月25日再次入本科...患者女性,48岁,2023年6月13日主因新型冠状病毒肺炎住院,核酸转阴后,于6月19日出院。6月22日再次出现发热,体温最高38.1℃,伴畏寒,肌肉酸痛,胸部CT提示双肺多发斑片状磨玻璃影、实变影,部分较前吸收,部分较前新发,于6月25日再次入本科住院治疗。体格检查可闻及湿啰音及散在哮鸣音。血气分析(不吸氧):酸碱度(pH)7.41,动脉血二氧化碳分压(PaCO_(2))36 mm Hg(1 mm Hg=0.133 kPa),动脉血氧分压(PaO_(2))57 mm Hg,氧合指数(P/F ratio)282 mm Hg;血常规:白细胞计数(WBC)5.85×10^(9)/L,中性粒细胞百分比(NEU%)68%,淋巴细胞百分数(LYM)26%,血红蛋白(Hb)116 g/L;考虑社区获得性肺炎(CAP)。完善检查,呼吸道病毒十三项提示偏肺病毒核酸阳性,支气管镜灌洗液微生物二代基因测序(NGS)提示偏肺病毒序列数24469条。综合分析诊断为肺炎-人偏肺病毒(hMPV)感染。停用抗生素,予以对症治疗及中药治疗。复查胸部CT提示两肺散在斑片影明显吸收。说明随着宏基因组学的应用普及,越来越多社区获得性肺炎病原体得以明确。hMPV支气管炎或肺炎患者,病程多为自限性,继发细菌感染几率较低,治疗往往并不需要抗生素,可采用支持性治疗,目前尚无有效的抗病毒药物。展开更多
OBJECTIVE Human metapneumovirus(hMPV)is semblable to respiratory syncytial virus(RSV)which causes respiratory infections typically characterized by cough,runny nose,fever,and nasal congestion but sometimes progressing...OBJECTIVE Human metapneumovirus(hMPV)is semblable to respiratory syncytial virus(RSV)which causes respiratory infections typically characterized by cough,runny nose,fever,and nasal congestion but sometimes progressing to bronchiolitis and pneumonia.Whereas,there is no corresponding drug to inhabit the virus.Studies of new compounds with potential anti-HMPV activity could produce clinical value.Chinese herbal medicine played a great role during COVID-19,therefore we choose some small molecular(JH001)extracted from botany to investigate therapeutic effect on hMPV and the underlying mechanisms.METHODS In this study,16HBE cells were used as a model to explore in vitro antiviral effect.Cytotoxicity assays were performed before the antiviral tests,cell viability of 16HBE cells handled by different concentration of JH001 was estimated by Cell Counting Kit-8(CCK-8).Then RT-qPCR,immunofluorescence,and flow cytometer were used to test the viral titer after cells infected with hMPV.Eventually,6-8 weeks mice were infected intranasally with 60μL of hMPV,the control group was treated with 0.9%saline water,other groups were administered with JH001 and ribavirin,then the lung virus titer and protective effect in lung were judged.RESULTS The obtained JH001 exhibited no cytotoxicity to 16HBE cells during 6.25-200μmol·L^(-1).RT-QPCR demonstrated that JH001 showed obvious inhabitation to the viral replication and showed great significance compared with saline.And fluorescence exhibited distinct decrease of hMPV-N protein,flow cytometer results showed that MFI decrease evidently.Significant reduction of N-gene expression was observed in those mice treated with JH001 compared with saline group,which indicated that JH001 probably had protective and therapeutic effect on viral replication.CONCLUSION This study illustrated that JH001 might be a promising option for small molecular against hMPV and JH001 might be worthy of further development and used as a potential therapeutic strategy for other respiratory viruses in the future.展开更多
Background Human metapneumovirus （hMPV） was discovered by scientists in the Netherlands as a novel respiratory virus in 2001 and had been found in children with acute respiratory tract infections （ARTI） in China. ...Background Human metapneumovirus （hMPV） was discovered by scientists in the Netherlands as a novel respiratory virus in 2001 and had been found in children with acute respiratory tract infections （ARTI） in China. The objective of this study was to determine the importance of hMPV infection in children in Beijing and the genotypes of the circulating virus by the surveillance during a four-consecutive-year period.展开更多
Human metapneumovirus(HMPV) infection is one of the leading causes of hospitalization in young children with acute respiratory illness. In this study, we prospectively collected respiratory tract samples from children...Human metapneumovirus(HMPV) infection is one of the leading causes of hospitalization in young children with acute respiratory illness. In this study, we prospectively collected respiratory tract samples from children who were hospitalized with acute lower respiratory tract infection in six hospitals in China from 2017 to 2019. HMPV was detected in 145 out of 2733 samples(5.3%) from the hospitalized children. The majority of HMPV-positive children were under the age of two(67.6%), with a median age of one year. HMPV can independently cause acute lower respiratory tract infection in young children, while all patients showed mild clinical symptoms. Of all the co-infected patients, HMPV was most commonly detected with enterovirus(EV) or rhinovirus(RhV)(38.0%),followed by respiratory syncytial virus(RSV)(32.0%). The highest detection rate occurred from March to May in both northern and southern China. Out of 145 HMPV positive samples, 48 were successfully typed, of which 36strains were subgrouped into subtypes A2c(75%), eight strains were included in subtype B1(16.7%), and four strains were included in subtype B2(8.3%). Moreover, 16 A2c strains contained 111-nucleotide duplications in the G gene. Twenty-seven complete HMPV genomes were successfully obtained, and 25(92.6%) strains belonged to subtype A2c, whereas one strain was included in subgroup B1 and another was included in subgroup B2. A total of 277 mutations were observed in the complete genomes of 25 A2c strains. All results presented here improve our understanding of clinical characteristics and molecular epidemiology of HMPV infection in children.展开更多
文摘Introduction: The Infection Control Law in Japan does not cover monitoring of human metapneumovirus (HMPV). Therefore, its epidemiology is not well known. However, rapid diagnostic testing for this virus has been reimbursed by public health insurance in Japan since 2014. One case of acute encephalitis caused by HMPV was reported in April 2017 in Ibaraki. All schools in Ibaraki prefecture started to participate in the (Nursery) School Absenteeism Surveillance System ((N)SASSy) in 2009. All nursery schools started to use it in 2012. Methods: We specifically examine its seasonality and incidence by age. The study period extends from October 1, 2014 through May 31, 2017. Results: In total, (N)SASSy received 187 cases during the period. Spring and early summer were apparently the high season. The highest incidence was 36 cases in April 2015. The incidence among zero and one year olds was higher in 2017 than in the same season among 2014-2016. The necessary effort to download data from (N)SASSy, show these figures, and confirm the situation and background was a few minutes. Discussion: Rapid diagnostic testing for HMPV elucidated its epidemiology for the first time. Moreover, timely information sharing through (N)SASSy led the Ibaraki prefectural office to publish a reminder in July 2017 about the HMPV outbreak situation and to encourage precautions against it by nursery schools.
文摘<strong>Objective: </strong>To determine the prevalence of human metapneumovirus (hMPV) among children with acute respiratory tract infection and the correlation between (hMPV) and age group. <strong>Methods: </strong>This prospective, descriptive cross-sectional hospital-based study is carried out from January to May 2019 among children from under five years old who were admitted to El-Obeid pediatric teaching Hospital, North kordofan, Sudan with acute respiratory tract infection. <strong>Results: </strong>Fifty hospitalized children with acute respiratory tract infection were enrolled in the study. Two of these (4%) were tested positive for (hMPV) in the age group (7 months - 2 years) old. Moreover, the study showed no significant correlation between infection with (hMPV) and age.
文摘患者女性,48岁,2023年6月13日主因新型冠状病毒肺炎住院,核酸转阴后,于6月19日出院。6月22日再次出现发热,体温最高38.1℃,伴畏寒,肌肉酸痛,胸部CT提示双肺多发斑片状磨玻璃影、实变影,部分较前吸收,部分较前新发,于6月25日再次入本科住院治疗。体格检查可闻及湿啰音及散在哮鸣音。血气分析(不吸氧):酸碱度(pH)7.41,动脉血二氧化碳分压(PaCO_(2))36 mm Hg(1 mm Hg=0.133 kPa),动脉血氧分压(PaO_(2))57 mm Hg,氧合指数(P/F ratio)282 mm Hg;血常规:白细胞计数(WBC)5.85×10^(9)/L,中性粒细胞百分比(NEU%)68%,淋巴细胞百分数(LYM)26%,血红蛋白(Hb)116 g/L;考虑社区获得性肺炎(CAP)。完善检查,呼吸道病毒十三项提示偏肺病毒核酸阳性,支气管镜灌洗液微生物二代基因测序(NGS)提示偏肺病毒序列数24469条。综合分析诊断为肺炎-人偏肺病毒(hMPV)感染。停用抗生素,予以对症治疗及中药治疗。复查胸部CT提示两肺散在斑片影明显吸收。说明随着宏基因组学的应用普及,越来越多社区获得性肺炎病原体得以明确。hMPV支气管炎或肺炎患者,病程多为自限性,继发细菌感染几率较低,治疗往往并不需要抗生素,可采用支持性治疗,目前尚无有效的抗病毒药物。
文摘OBJECTIVE Human metapneumovirus(hMPV)is semblable to respiratory syncytial virus(RSV)which causes respiratory infections typically characterized by cough,runny nose,fever,and nasal congestion but sometimes progressing to bronchiolitis and pneumonia.Whereas,there is no corresponding drug to inhabit the virus.Studies of new compounds with potential anti-HMPV activity could produce clinical value.Chinese herbal medicine played a great role during COVID-19,therefore we choose some small molecular(JH001)extracted from botany to investigate therapeutic effect on hMPV and the underlying mechanisms.METHODS In this study,16HBE cells were used as a model to explore in vitro antiviral effect.Cytotoxicity assays were performed before the antiviral tests,cell viability of 16HBE cells handled by different concentration of JH001 was estimated by Cell Counting Kit-8(CCK-8).Then RT-qPCR,immunofluorescence,and flow cytometer were used to test the viral titer after cells infected with hMPV.Eventually,6-8 weeks mice were infected intranasally with 60μL of hMPV,the control group was treated with 0.9%saline water,other groups were administered with JH001 and ribavirin,then the lung virus titer and protective effect in lung were judged.RESULTS The obtained JH001 exhibited no cytotoxicity to 16HBE cells during 6.25-200μmol·L^(-1).RT-QPCR demonstrated that JH001 showed obvious inhabitation to the viral replication and showed great significance compared with saline.And fluorescence exhibited distinct decrease of hMPV-N protein,flow cytometer results showed that MFI decrease evidently.Significant reduction of N-gene expression was observed in those mice treated with JH001 compared with saline group,which indicated that JH001 probably had protective and therapeutic effect on viral replication.CONCLUSION This study illustrated that JH001 might be a promising option for small molecular against hMPV and JH001 might be worthy of further development and used as a potential therapeutic strategy for other respiratory viruses in the future.
基金This study was supported by the grants from the National Natural Science Foundation of China （No. 30570080 and No. 30872153）, the Natural Science Foundation of Beijing （No. 7052020） and the Special Grant for Outstanding Young Scientist from Beijing Municipal Government （No. 2004B34）.
文摘Background Human metapneumovirus （hMPV） was discovered by scientists in the Netherlands as a novel respiratory virus in 2001 and had been found in children with acute respiratory tract infections （ARTI） in China. The objective of this study was to determine the importance of hMPV infection in children in Beijing and the genotypes of the circulating virus by the surveillance during a four-consecutive-year period.
基金funded by the National Natural Science Foundation of China(82172275)the CAMS Innovation Fund for Medical Sciences,China(CIFMS,2019-I2M-5-026)
文摘Human metapneumovirus(HMPV) infection is one of the leading causes of hospitalization in young children with acute respiratory illness. In this study, we prospectively collected respiratory tract samples from children who were hospitalized with acute lower respiratory tract infection in six hospitals in China from 2017 to 2019. HMPV was detected in 145 out of 2733 samples(5.3%) from the hospitalized children. The majority of HMPV-positive children were under the age of two(67.6%), with a median age of one year. HMPV can independently cause acute lower respiratory tract infection in young children, while all patients showed mild clinical symptoms. Of all the co-infected patients, HMPV was most commonly detected with enterovirus(EV) or rhinovirus(RhV)(38.0%),followed by respiratory syncytial virus(RSV)(32.0%). The highest detection rate occurred from March to May in both northern and southern China. Out of 145 HMPV positive samples, 48 were successfully typed, of which 36strains were subgrouped into subtypes A2c(75%), eight strains were included in subtype B1(16.7%), and four strains were included in subtype B2(8.3%). Moreover, 16 A2c strains contained 111-nucleotide duplications in the G gene. Twenty-seven complete HMPV genomes were successfully obtained, and 25(92.6%) strains belonged to subtype A2c, whereas one strain was included in subgroup B1 and another was included in subgroup B2. A total of 277 mutations were observed in the complete genomes of 25 A2c strains. All results presented here improve our understanding of clinical characteristics and molecular epidemiology of HMPV infection in children.
