Invasive Pneumococcal Disease During the COVID-19 Pandemic in Calgary, Canada

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Kellner ISPPD 2022 388 IPD COVID-19 FINAL.pdf(747.34 KB)
Date
2022-06-20
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Abstract
Similar to other regions and countries, there was a dramatic decline in the incidence of IPD and other contagious infectious diseases in Calgary after the start of the COVID-19 pandemic. The initial decline in overall IPD incidence (IRR 0.22 in 2nd quarter of 2020 vs average for 2011-19) was particularly dramatic and was sustained until mid-2021 in adults and the end of 2021 in children. Presumably, the reduction was related to society-side measures implemented to reduce transmission of the SARS-CoV-2 virus, with such measures also reducing the transmission of other contagious diseases including pneumococcus and influenza. These measures were highest in 2020 and gradually reduced through 2021. In addition, IPD uncommonly occurs as a complication of SARS-CoV-2 infections, unlike other viruses such as influenza and RSV, where secondary pneumococcal infections occur readily. The higher rebound in PCV13 serotype IPD in adults in 2021 (compared with non-PCV13 serotype IPD) of interest. Childhood PCV programs have demonstrated a strong herd-protection effect to prevent vaccine-serotype IPD in adults. There was a significant decline in routine childhood vaccination rates in Alberta in 2020 (https://bmjopen.bmj.com/content/12/1/e055968). There may be an association between such declines and a reduction in the level of herd protection that influences vaccine-serotype IPD in adults.
Description
12th International Symposium on Pneumococci and Pneumococcal Diseases (ISPPD-12), Toronto, Canada, June 19-23, 2022
Keywords
Streptococcus pneumoniae, pneumococcus, COVID-19, SARS-CoV-2, invasive pneumococcal disease
Citation
Ricketson, L., Kellner, J. D., & CASPER Investigators (2022, June 19-23). Invasive Pneumococcal Disease During the COVID-19 Pandemic in Calgary, Canada. [Poster presentation]. 12th International Symposium on Pneumococci and Pneumococcal Diseases, Toronto, Canada. https://isppd.kenes.com
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http://hdl.handle.net/1880/114741
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Cumming School of Medicine Research & Publications