Acute lower respiratory infections due to respiratory syncytial virus and adenovirus among hospitalized children from Argentina

Antigenic and genomic characterization of adenovirus associated to respiratory infections in children living in Northeast Brazil

“…This characteristic differs from those seen in studies in Argentina and Chile, where members of species B were the most prevalent (Kajon et al 1996, Videla et al 1998, Larrañaga et al 2000, Carballal et al 2002.…”

Respiratory syncytial virus infection in children under one year of age hospitalized for acute respiratory diseases in Pelotas, RS

“…These conditions are particularly important for the seasonality of viral infections, mainly by RSV (15,(19)(20)(21) , as observed in the present study. The prevalence of positive RSV was 30.7%, being almost 40% in bronchiolitis, similar to that reported in the literature, with 30 to 40% rate of positive RSV in bronchiolitis (22)(23)(24)(25)(26) by immunofluorescence. High positive rates, varying from 70 to 80% were observed when other diagnostic methods, such as culture and serology, were associated to immunofluorescence (20,21) .…”

Respiratory syncytial virus and adenovirus in acute lower respiratory infections in hospitalized infants and children

“…Whether our high percent HAdV rate arises from methodological or geographical differences remains to be elucidated. Monthly peaks of HAdV incidence are reported in April [31], April and September [34] but at the end of winter and beginning of spring in the southern hemisphere [22]. In the study by Hong et al, HAdV serotype 7 (associated with the highest morbidity) peaked sharply in May 1996 [36].…”

“…Peaks have been reported in December [30] January [31], February [8,30,32], and March [33]. Below the Ecuatorial line, RSV peaks have been described in May [34] and July [22]. A previous Italian study described an epidemic peak of RSV in February with a prevalence of 52% in hospitalized children with LRTI [32].…”

“…There are at least 51 immunologically distinct human HAdV serotypes (6 species: HAdV A through F) associated with infections ranging from respiratory disease (HAdV-B1, C, E), urinary tract disease (HAdV-B2), and keratoconjunctivitis (HAdV-D), to gastroenteritis (HAdV-F serotypes 40 and 41) [20]. The few available data on HAdV epidemics suggest a non-seasonal (perennial) distribution [21,22]. More information on infants and children hospitalized for HAdVrelated LRTI would help improve therapy and might also reduce health resources in a pediatric ward.…”