IPD Quarterly Report: Jan-Mar 2022

There were 68 IPD cases notified January to March 2022 (Q1 2022), which is largely in line with the number of notified cases in Q1 2019, Q1 2020, and Q1 2021. The number of cases with PCV13 preventable serotypes among children under 5 has continued to steadily increase since 2018. The proportion of PCV13-specific cases that are 19A among all ages has steadily increased since 2017. In 2019, 49.2% of all PCV13 cases were 19A, which increased to 75.0% in 2021. In 2022 through Q1, 65.2% of PCV13 cases are 19A. In 2021, 2 of the 19 19A cases reported through March were < 2 years old, and in 2022 4 of the 15 19A cases reported through March were < 2 years old.