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Abstract

Objective: To investigate the epidemiological characteristics of children infected with diarrheal virus in Hangzhou, China, 2023.

Methods: From January 2023 to December 2023, 20,939 stool samples from children with acute infectious diarrhea were collected for detection of rotavirus A and human adenovirus, using Latex agglutination detection kits; 7584 stool samples were collected for detection of norovirus, using real‐time PCR reagent.

Results: 639 (3.0%, 639/20,939) tested positive for rotavirus A, and 1,201 (5.7%, 1,201/20,939) positive samples were detected by Colloidal gold method. The positive rates of norovirus were 42.2% (3,203/7,585). Among all age groups, the rotavirus A positive detection rate was the highest in participants 3 to 6 years old (6.46%, 260/4,024). The monthly distribution of patients with rotavirus A showed that the number of cases was the lowest in October (0.45%, 8/1,779) and reached the peak in April (7.97%, 144/1,806). The highest and lowest positive rates among all age groups for human adenovirus were 3 to 6 years old (8.27%, 333/4,024) and 0 to 6 months (2.21%, 60/2,717). The monthly positivity rates of human adenovirus spanning from January to November 2023 were 1.38%, 1.44%, 2.34%, 3.65%, 6.64%, 7.71%, 7.54%, 7.13%, 6.82%, 4.15%, 6.50%, and reach the peak in December (8.17%). For norovirus, children aged 1 to 3 years had the highest positive detection rate (57.95%, 1,349/2,328), while infants aged 0 to 6 months had the lowest positive detection rate (19.60%, 205/1,046). The results show that January had the lowest number of cases (14.63%, 6/41), while September had the highest at 50.51% (545/1,079).

Conclusions: The detection rate of rotavirus A and human adenovirus was highest among participants aged 3 to 6 years, whereas the detection rate of norovirus was highest among those aged 1 to 3 years. The monthly distribution peaks for the three enteric viruses varied significantly.

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