Objective: To determine the seroprevalence of B19V IgM as a measure of acute infection and associated risk factors among < 5 years children at Oyo state, Nigeria. Methods: One hundred and sixteen (116) and thirty e...Objective: To determine the seroprevalence of B19V IgM as a measure of acute infection and associated risk factors among < 5 years children at Oyo state, Nigeria. Methods: One hundred and sixteen (116) and thirty eight (38) blood samples were individually collected from severe anaemia and age-matched non-anaemic children between 1-60 months old at Oyo state, Nigeria. EDTA anticoagulated blood was tested for their packed cell volume, while sera were tested for human parvovirus IgM antibodies using microhaematocrit centrifuge and Enzyme Linked Immunosorbent Assay, respectively. Interviewer-based questionnaires were used to collect participants' sociodemographic variables. Results: Anti-B19V IgM was detected in 17 (14.7%) severe anaemia subjects, whereas, only 2 (5.3%) non-anaemia subjects had B19V IgM. The prevalence of parvovirus B19 IgM antibodywas higher in anaemic subjects than non-anaemic control group. There is significant association between the seroprevalence of anti-B19V IgM and family size (P=0.001), number of siblings (P=0.032) and education status (P=0.01) of anaemic children but seroprevalence of anti-B19V IgM is not significantly associated with gender, family type and age (P>0.05). Conclusions: The seroprevalence of 14.7% among anaemic children confirm that these infections are endemic in Nigeria. This level of infectivity suggests that there is a high risk of transmission to healthy children as well as children with underlying haemolytic or acquired anaemia in Nigeria.展开更多
Persons living with HIV infection occasionally suffer from anemia due to varying causes.These include the use of zidovudine,malnutrition especially vitamin B12and iron deficiency,opportunistic infections by Mycobacter...Persons living with HIV infection occasionally suffer from anemia due to varying causes.These include the use of zidovudine,malnutrition especially vitamin B12and iron deficiency,opportunistic infections by Mycobacterium tuberculosis,Pneumocystis jiroveci,and direct hematological effects of HIV infection itself within the marrow microenvironment.Persistent Parvovirus B19（B19V）infection is a clinically important and treatable etiology of anemia in HIV-infected persons.展开更多
Background:Chemotherapy with praziquantel(PZQ)has been the cornerstone of schistosomiasis control over the last two decades.Being the only available drug for the treatment of over 200 million people worldwide,continuo...Background:Chemotherapy with praziquantel(PZQ)has been the cornerstone of schistosomiasis control over the last two decades.Being the only available drug for the treatment of over 200 million people worldwide,continuous monitoring of PZQ efficacy under the pressure of widespread use is therefore advocated.Methods:The efficacy of taking two doses of oral PZQ for the treatment of Schistosoma haematobium was examined among school children in Nigeria.Urine specimens were collected from 350 school children and examined using the filtration technique.Blood was collected for packed cell volume(PCV)estimation,and the weight and height of each child were estimated.S.haematobium egg positive pupils were treated with two oral doses of PZQ at 40 mg/kg with a four-week interval in between.Drug efficacy was determined based on the egg reduction rate(ERR).Results:Among 350 school children,245(70.0%)-of which 132 were males and 113 were females,with an age range of 4 to 15 years-were diagnosed with S.haematobium.All the 245 infected children received a single oral dose of 40 mg/kg PZQ twice with a four-week interval in between and were followed up for 12 weeks.At four,eight and twelve weeks post treatment,the ERR was 57.1%,77.6%and 100%,respectively.The ERR was significantly higher among the children with a light infection compared to those with a heavy infection.One hundred and twenty-one children were egg negative at four weeks post treatment,among which 1(6.3)and 120(52.4%)had heavy and light infections,respectively.Following the second round of treatment,the cure rate at eight weeks and twelve weeks was 85.3%and 100%,respectively.Conclusion:This study demonstrated the efficacy of taking two doses of oral PZQ for the treatment of urinary schistosomiasis among school children in Nigeria.展开更多
文摘Objective: To determine the seroprevalence of B19V IgM as a measure of acute infection and associated risk factors among < 5 years children at Oyo state, Nigeria. Methods: One hundred and sixteen (116) and thirty eight (38) blood samples were individually collected from severe anaemia and age-matched non-anaemic children between 1-60 months old at Oyo state, Nigeria. EDTA anticoagulated blood was tested for their packed cell volume, while sera were tested for human parvovirus IgM antibodies using microhaematocrit centrifuge and Enzyme Linked Immunosorbent Assay, respectively. Interviewer-based questionnaires were used to collect participants' sociodemographic variables. Results: Anti-B19V IgM was detected in 17 (14.7%) severe anaemia subjects, whereas, only 2 (5.3%) non-anaemia subjects had B19V IgM. The prevalence of parvovirus B19 IgM antibodywas higher in anaemic subjects than non-anaemic control group. There is significant association between the seroprevalence of anti-B19V IgM and family size (P=0.001), number of siblings (P=0.032) and education status (P=0.01) of anaemic children but seroprevalence of anti-B19V IgM is not significantly associated with gender, family type and age (P>0.05). Conclusions: The seroprevalence of 14.7% among anaemic children confirm that these infections are endemic in Nigeria. This level of infectivity suggests that there is a high risk of transmission to healthy children as well as children with underlying haemolytic or acquired anaemia in Nigeria.
文摘Persons living with HIV infection occasionally suffer from anemia due to varying causes.These include the use of zidovudine,malnutrition especially vitamin B12and iron deficiency,opportunistic infections by Mycobacterium tuberculosis,Pneumocystis jiroveci,and direct hematological effects of HIV infection itself within the marrow microenvironment.Persistent Parvovirus B19（B19V）infection is a clinically important and treatable etiology of anemia in HIV-infected persons.
文摘Background:Chemotherapy with praziquantel(PZQ)has been the cornerstone of schistosomiasis control over the last two decades.Being the only available drug for the treatment of over 200 million people worldwide,continuous monitoring of PZQ efficacy under the pressure of widespread use is therefore advocated.Methods:The efficacy of taking two doses of oral PZQ for the treatment of Schistosoma haematobium was examined among school children in Nigeria.Urine specimens were collected from 350 school children and examined using the filtration technique.Blood was collected for packed cell volume(PCV)estimation,and the weight and height of each child were estimated.S.haematobium egg positive pupils were treated with two oral doses of PZQ at 40 mg/kg with a four-week interval in between.Drug efficacy was determined based on the egg reduction rate(ERR).Results:Among 350 school children,245(70.0%)-of which 132 were males and 113 were females,with an age range of 4 to 15 years-were diagnosed with S.haematobium.All the 245 infected children received a single oral dose of 40 mg/kg PZQ twice with a four-week interval in between and were followed up for 12 weeks.At four,eight and twelve weeks post treatment,the ERR was 57.1%,77.6%and 100%,respectively.The ERR was significantly higher among the children with a light infection compared to those with a heavy infection.One hundred and twenty-one children were egg negative at four weeks post treatment,among which 1(6.3)and 120(52.4%)had heavy and light infections,respectively.Following the second round of treatment,the cure rate at eight weeks and twelve weeks was 85.3%and 100%,respectively.Conclusion:This study demonstrated the efficacy of taking two doses of oral PZQ for the treatment of urinary schistosomiasis among school children in Nigeria.
