IPD Quarterly Report: Jul-Sep 2021

Friday 2nd December 2022


There were 191 IPD cases notified in the July−September 2021 quarter, compared with 107 cases in Q3 2020 and 180 cases in Q3 2019. The rate of IPD among those 65 or older through Q3 2021 is approximately equal to the rate at the end of 2020. However, for children under 2 the rate of IPD through Q3 2021 was the highest since 2012. The rate of serotype 19A for children under 2 years steadily increased since 2017. Through Q3, the rate of 19A in 2021 among children under 2 years was the highest since before PCV10 was first introduced in 2011. Similarly, the rate of 19A for children 2-4 in 2021 through Q3 was also the highest it had been since before PCV10 was introduced in 2011. The rates of serotype 19A for 2021 through Q3 among 5-64 year olds and 65 or older were the highest they had been since 2015. Among children under 5 years of age, the number of IPD cases that were vaccine preventable increased steadily since 2018. Through Q3 2021, the number of vaccine preventable cases among children under 5 was nearly as much as 2019 and 2020 combined. Further, since 2018, more than 95% of all vaccine preventable cases in children under 5 were 19A.

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IPD Quarterly Report: Jul-Sep 2021



IPD Quarterly Report: Jul-Sep 2021

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