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Published on: November 7, 2018
[Pathogenic diagnosis of an unexplained epidemic event of infectious diarrhea]
Yun-zhi Liu1, Yi-wei Huang, Miao Jin
1Center for Disease Control Hunan Pronice, Changsha 410005, China.
Objective:
To determine the pathogen of an unexplained epidemic event of infectious diarrhea by laboratory diagnosis of suspected cases samples.
Methods:
28 samples from 28 suspected cases (22 fecal samples, 3 vomitus samples, 3 anus swab samples) were tested for Norovirus by RT-PCR. Sequencing and phylogenetic analysis were acomplished of 5 positive samples.
Results:
160 of 5694 population were ill with an attack rate of 2.81%. The peak period was 7-9, March. 14 of 28 samples were tested Norovirus positive.Sequencing and phylogenetic analysis showed Norovirus type GII/4 was the causative agent and it had highest identity (97. 9%) with epidemic strain 2006b.
Conclusion:
The epidemic event ofinfectious diarrhea were caused by GII/4 Norovirus strains.
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