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Increase in invasive disease caused by Haemophilus influenzae b, the Netherlands, 2020 to 2021
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View Affiliations Hide AffiliationsAnneke Steensanneke.steens rivm.nl
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Citation style for this article: . Increase in invasive disease caused by Haemophilus influenzae b, the Netherlands, 2020 to 2021. Euro Surveill. 2021;26(42):pii=2100956. https://doi.org/10.2807/1560-7917.ES.2021.26.42.2100956 Received: 04 Oct 2021; Accepted: 21 Oct 2021
Abstract
The incidence of most respiratory-transmitted diseases decreased during the COVID-19 pandemic as a result of containment measures. In contrast, in the Netherlands we noted an increase in invasive disease caused by Haemophilus influenzae b (Hib) (from < 0.3/100,000 before 2019 to 0.39 and 0.33/100,000 in 2020 and 2021) in vaccinated and unvaccinated age groups. We did not find a change in vaccine effectiveness against Hib invasive disease (effectiveness > 90%). We discuss factors that may have contributed to this rise.
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