Seasonal variation on the presence of adenoviruses in stools from non-diarrheic patients.
Human adenoviruses (HAdV), members of the Adenoviridae family, are excreted through the fecal route and may be present in the feces of humans consuming contaminated food or water. The presence of HAdV from different serotypes in the feces of healthy individuals was already reported using conventional polymerase chain reaction; however, real-time PCR (qPCR) may reveal not only the rates of detection as well as demonstrate the viral loads excreted by healthy persons. Aiming to identify and characterize the presence of adenoviruses in stool samples, 147 fecal samples from patients with no records of diarrhea were analyzed (74 from winter season and 73 from summer) by Real-Time PCR (qPCR) assay and conventional PCR. HAdV genome was present in 43.8% (32/73) of stools samples collected during summer season and 21.6% (16/74) during winter. The rate of detection of genomic copies (gc) ranged from 4.04×10(2) to 6.72×10(5)gc/g of feces among the 147 samples analyzed, of which the ranged of genomic copies of DNA HAdV was major in summer. All samples were negative when tested for rotaviruses (RV) and noroviruses (NoV) by PCR conventional and qPCR respectively. HAdV is excreted constantly by infected individuals in the absence of clinical signs and the occurrence may vary seasonally.
['Vetter|Michele Regina|MR|', 'Staggemeier|Rodrigo|R|', 'Dalla Vecchia|Andréia|A|', 'Henzel|Andréia|A|', 'Rigotto|Caroline|C|', 'Spilki|Fernando Rosado|FR|']
D000258:Adenovirus Infections, Human D000260:Adenoviruses, Human D000328:Adult D001938:Brazil D005243:Feces D005260:Female D006801:Humans D008297:Male D008875:Middle Aged D029322:Norovirus D060888:Real-Time Polymerase Chain Reaction D012401:Rotavirus D012621:Seasons D055815:Young Adult
HAdV healthy individuals qPCR stool samples