Update on Wild Poliovirus Type 1 Outbreak - Southeastern Africa, 2021-2022

Published on April 13, 2023

This report describes wild poliovirus type 1 surveillance in southeastern Africa.

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Widespread Community Transmission of Hepatitis A Virus Following an Outbreak at a Local Restaurant - Virginia, September 2021-September 2022

April 6, 2023
This report describes the spread of hepatitis A following an outbreak in Virginia.

Comparison of the epidemiology of invasive pneumococcal disease between Australia and New Zealand in 2017–2021: an observational study based on surveillance data

April 17, 2023
SummaryBackgroundThe Australian immunisation schedule uses 13-valent pneumococcal conjugate vaccine (PCV13), while New Zealand (NZ) changed from PCV13 to 10-valent PCV (PCV10) in 2017. In NZ, cases of serotype 19A (not in PCV10) have been increasing since 2017. We compared invasive pneumococcal disease (IPD) epidemiology between Australia and NZ in 2017–2021.MethodsWe collated IPD notification dat