instruction:
In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.
question:
Objective: Human Bocavirus (HBoV) was first identified in 2005 and has been shown to be a common cause of respiratory infections and gastroenteritis in children. In a recent study, we found that 10.7% of children with acute respiratory infections (ARI) were infected by HBoV. Genetic characterization of this virus remains unknown in Central Africa, particularly in Cameroon Leeding us to evaluate the molecular characteristics of HBoV strains in Cameroonian children with ARI. Results: Phylogenetic analysis of partial HBoV VP1/2 sequences showed a low level of nucleotide variation and the circulation of HBoV genotype 1 (HBoV-1) only. Three clades were obtained, two clustering with each of the reference strains ST1 and ST2, and a third group consisting of only Cameroon strains. By comparing with the Swedish reference sequences, ST1 and ST2, Cameroon sequences showed nucleotide and amino acid similarities of respectively 97.36-100% and 98.35-100%. These results could help improve strategies for monitoring and control of respiratory infections in Cameroon.
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Phylogenic analysis of human bocavirus detected in children with acute respiratory infection in Yaounde, Cameroon


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We investigated the sensitivity of human rotavirus rapid antigen detection (RAD) kits, RT-PCR and next-generation DNA sequencing (NGS) for detection of bovine group A rotavirus (RVA). The Dipstick 'Eiken' Rota (Dipstick) showed the highest sensitivity out of the seven RAD kits against all selected strains in limited dilution analyses, which was consistent with the results for equine rotavirus previously reported. RT-PCR had 10 0 -10 3 -fold higher sensitivity than the Dipstick. NGS using thirteen RT-PCR-negative fecal samples revealed that all samples yielded RVA reads and especially that two of them covered all 11 genome segments. Moreover, mapping reads to reference sequences allowed genotyping. The NGS would be sensitive and useful for analysis of less dependent on specific primers and screening of genotypes.
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Yukie KATAYAMA 2) , Mami OBA 2) , Naomi NISHIURA 2) , Yukiko SASSA 2) , Tsutomu OMATSU 2) , Tetsuya FURUYA 2,4) , Satoshi KOYAMA 5)


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Veal calf hemorrhagic enteritis, a condition that has no identified specific etiology, is a fatal syndrome of veal calves and has recently become a major concern of the veal calf industry in the midwestern United States. To determine the possible role of common enteric pathogens in this disease, 40 veal calves with hemorrhagic enteritis (cases) and 25 dairy calves diagnosed with enteric infection (control) were investigated. The veal calves were negative for several known enteric pathogens except for pathogenic Escherichia coil isolates that expressed multiple virulence attributes. To determine whether such isolates have a significant association with hemorrhagic enteritis in veal calves, we compared the prevalence of pathogenic E. coli in the 40 veal calves with the prevalence of similar E. coil in the dairy calves that were diagnosed with colibacillosis within the same season of the year. Escherichia coil isolates from the two groups of calves were tested for several properties orE. coil related to pathogenicity, i.e. production of verotoxins, heat-stable enterotoxin (STa), heat-labile enterotoxin, enterohemolysin, K99 fimbrial antigens, hemagglutination activity, and attachment to Hep-2 tissue culture cells. Escherichia coil that produce ST a were more commonly isolated from veal calves with hemorrhagic enteritis (45%) than from dairy calves with enteritis (12%) ( P < 0.05 ). Various patterns of attachment of E. coil to Hep-2 tissue culture cells were studied. The E. coil that demonstrated aggregative patterns of attachment were more commonly represented in veal calves (32%) than in dairy calves (8%). We observed that there was no correlation between STa production and K99 pill expression among the enterotoxigenic E. coli (ETEC) isolates that were recovered from veal calves. This may indicate the emergence of K99-negative ETEC, probably as a result of the wide use of K99based vaccines.
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The role of pathogenic Escherichia coli in the etiology of veal calf hemorrhagic enteritis