INVASIVE PNEUMOCOCCAL DISEASE BIANNUAL REPORT: JULY 2022 TO JUNE 2023

DISCLAIMER This report or document (“the Report”) is given by the Institute of Environmental Science and Research Limited (“ESR”) solely for the benefit of the Ministry of Health, Public Health Services Providers and other Third Party Beneficiaries as defined in the Contract between ESR and the Ministry of Health, and is strictly subject to the conditions laid out in that Contract. [...] Number of cases of invasive pneumococcal disease by month and year, 2013 - June 2023 Invasive pneumococcal disease biannual report: July 2022 to June 2023 INSTITUTE OF ENVIRONMENTAL SCIENCE AND RESEARCH LIMITED Page 7 INCIDENCE OF INVASIVE PNEUMOCOCCAL DISEASE BY AGE GROUP AND SEX The incidence of IPD follows a U-shaped distribution by age (Figure 5). [...] The incidence of IPD in the total population has been increasing since 2020/21 and the incidence in 2022/23 is the highest it has been in the past 10 years. [...] Invasive pneumococcal disease biannual report: July 2022 to June 2023 INSTITUTE OF ENVIRONMENTAL SCIENCE AND RESEARCH LIMITED Page 23 IMPACT OF NATIONAL IMMUNISATION PROGRAMME ON IPD INCIDENCE IN NEW ZEALAND Monitoring the epidemiology of IPD in New Zealand provides insight into the effectiveness of the PCV immunisation programme, including whether the immunisation is working and whether we have t. [...] CONCLUSION Given the recent changes to the vaccine programme, the phenomenon of serotype replacement and the availability and development of new vaccines, it is important to continually monitor trends in IPD epidemiology to inform vaccine decisions in the future.