PMID- 34931330 OWN - NLM STAT- MEDLINE DCOM- 20220224 LR - 20220224 IS - 1096-9071 (Electronic) IS - 0146-6615 (Linking) VI - 94 IP - 4 DP - 2022 Apr TI - Influence of the COVID-19 pandemic on the incidence and exacerbation of childhood allergic diseases. PG - 1655-1669 LID - 10.1002/jmv.27536 [doi] AB - To explore the influence of changes in human lifestyle and the living environment caused by nonpharmaceutical interventions in coronavirus disease 2019 (COVID-19) on allergic diseases, the present study enrolled children who came to the Children's Hospital of Zhejiang University for allergen detection between January 2019 and December 2020. By comparing the positive rates and levels of various allergen-specific immunoglobulin E (IgE) before and during the COVID-19 pandemic, the influence of changes in human lifestyle and the living environment caused by prevention and control measures in COVID-19 on allergic diseases was evaluated. In 2019, 41 648 allergic children went to the hospital, but in 2020, due to the impact of the COVID-19 epidemic, the number decreased to 24 714. In 2020, the number of allergy visits was the lowest in February and gradually increased. There were 45 879 children with total IgE > 17.5 IU/ml in 2 years, accounting for 69.13% of the total samples, of which the proportion was 68.52% (28 536/41 648) in 2019 and 70.17% (17 343/24 714) in 2020. A total of 29 906 children were positive for one or more allergens in 2 years. It accounts for 45.06% of the total number of samples, of which the proportion is 41.53% (17 296/41 648) in 2019 and 51.02% (12 610/24 714) in 2020. Except for cashew nuts, the positive number of other allergens in 2020 was less than in 2019, especially after June and July 2020. Except for Artemisia argyi, the positive rates of other allergens in 2020 were significantly higher than those in 2019 (p < 0.05). Moreover, the changing trend of the positive allergen rate in each month in 2020 was different from that in 2019. In 2020, except for Dermatophagoides farinae, Dermatophagoides pteronyssinus, and Crab, specific IgE levels of other allergens were not greater than those in 2019 (p < 0.05). Thus it can be seen, during the COVID-19 pandemic, nonpharmaceutical interventions played a protective role in reducing children's exposure to allergens and alleviating allergic reactions. CI - (c) 2021 Wiley Periodicals LLC. FAU - Ye, Qing AU - Ye Q AUID- ORCID: 0000-0002-6756-0630 AD - The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou, Zhejiang, China. FAU - Wang, Bili AU - Wang B AD - The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou, Zhejiang, China. FAU - Liu, Huihui AU - Liu H AD - The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou, Zhejiang, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211230 PL - United States TA - J Med Virol JT - Journal of medical virology JID - 7705876 RN - 0 (Allergens) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Allergens/classification/immunology MH - Animals MH - COVID-19/*epidemiology/prevention & control MH - Child MH - Child, Preschool MH - China/epidemiology MH - Female MH - Humans MH - Hypersensitivity/blood/*epidemiology MH - Immunoglobulin E/blood/immunology MH - Incidence MH - Infant MH - Infant, Newborn MH - Male MH - SARS-CoV-2 OTO - NOTNLM OT - COVID-19 OT - IgE OT - allergens OT - nonpharmaceutical interventions EDAT- 2021/12/22 06:00 MHDA- 2022/02/25 06:00 CRDT- 2021/12/21 06:53 PHST- 2021/12/14 00:00 [revised] PHST- 2021/11/11 00:00 [received] PHST- 2021/12/19 00:00 [accepted] PHST- 2021/12/22 06:00 [pubmed] PHST- 2022/02/25 06:00 [medline] PHST- 2021/12/21 06:53 [entrez] AID - 10.1002/jmv.27536 [doi] PST - ppublish SO - J Med Virol. 2022 Apr;94(4):1655-1669. doi: 10.1002/jmv.27536. Epub 2021 Dec 30.