ABSTRACT
Human bocavirus (HBoV) is a parvovirus whose association with respiratory disease is currently under investigation. OBJECTIVE: To determine HBoV prevalence in children with lower acute respiratory infection. METHODS: We investigated HBoV in 433 nasopharyngeal aspirates collected in 2007-2009 from children 0 to 5 years old hospitalized with bronchiolitis or pneumonia in Córdoba, Argentina. RESULTS: The general prevalence of HBoV was 21.5 percent and the positive cases (HBoV+) were more frequent during winter and spring. The mean age of HBoV+ patients was 6.9 months, with 87.1 percent of the detections corresponding to infants less than 1 year old (among which the prevalence of HBoV was 26.3 percent in patients < 3 months of age, 22.1 percent in 3 to 6 months, 25.3 percent in 6 to 9 months, and 18.8 percent in 9 to 12 months). The sequence analysis of the NP1 coding region of 15 isolates showed that all isolates from Cordoba were HBoV1 which exhibited a homology of nearly 100 percent both among themselves and with the originally discovered virus from 2005. CONCLUSION: Overall, our results indicate that HBoV is a significant pathogen that contributes to acute respiratory infection both on its own and during coinfection with other viruses.
Subject(s)
Child, Preschool , Female , Humans , Infant , Infant, Newborn , Male , Bronchiolitis, Viral/virology , Human bocavirus , Parvoviridae Infections/virology , Pneumonia, Viral/virology , Acute Disease , Argentina/epidemiology , Bronchiolitis, Viral/epidemiology , DNA, Viral/analysis , Human bocavirus/genetics , Human bocavirus/isolation & purification , Nasopharynx/virology , Phylogeny , Polymerase Chain Reaction , Prevalence , Parvoviridae Infections/epidemiology , Pneumonia, Viral/epidemiologyABSTRACT
This work presents the results of the detection of antibodies (immunoglobulin G) for subtypes I and VI of VEE viruses complex (Togaviridae family) in people from the General Belgrano island, Formosa province (Argentina). The prevalence of neutralizing (NT) antibodies for subtype VI was from 30 percent to 70 percent and the prevalence of antibodies inhibitory of hemagglutination (HI) was of 0 percent in the first and second inquiry respectively. For the subtype IAB the prevalence of NT antibodies was from 13 percent to 3.6 percent, similar to the prevalence total for both subtypes. HI antibodies were not detected in any inquiries for any subtype. It was observed that both subtypes circulate simultaneously, while subtype VI remains constant with some peaks, subtype I was found in low level
Subject(s)
Animals , Humans , Male , Female , Child, Preschool , Child , Adult , Middle Aged , Antibodies, Viral , Encephalitis Virus, Venezuelan Equine , Encephalomyelitis, Venezuelan Equine , Argentina , Encephalomyelitis, Venezuelan Equine , Prevalence , Seroepidemiologic StudiesABSTRACT
Se ha realizado un estudio de los mitos y costumbres ligadas a la leishmaniasis cutánea, en algunas poblaciones de la provincia de Huarochiri del Dpto de Lima, durante el Ii trimestre de 1993, logrando encuestas a 164 familias que habitan en zonas rurales en un terreno muy accidentado con una geografia típica de los valles interandinos. Se logró obtener los conocimientos rudimentarios que tiene la gente con respecto a la uta, así como sus formas de enfrentar a la realidad utilizando los recursos naturales propios de la zona, también se obtuvo datos desde el punto de vista epidemiológico, referente a los trabajos de cobertura y control de la uta en la zona estudiada. También se ha recogido datos sobre la repercusión social que tiene la marca de la cicatriz en el rostro de los pobladores.