The Increase in Invasive Bacterial Infections With Respiratory Transmission in Germany, 2022/2023.

BACKGROUND: In late 2022, health care institutions in Germany reported an unusual number of severe, invasive bacterial infections in association with a high incidence of viral respiratory infections. METHODS: We analyzed routine data on invasive infections due to Haemophilus influenzae, Neisseria meningitidis, Staphylococcus aureus, Streptococcus pneumoniae, and Streptococcus pyogenes (2017-2023) from a voluntary, laboratory-based surveillance system involving continuously participating facilities providing diagnostic routine data that cover approximately one-third of the German population. RESULTS: In the first quarter (Q1) of 2023, the number of invasive S. pyogenes isolates rose by 142% (n = 837 vs. mean Q1/2017-2019 = 346, 95% CI [258; 434]), while the number of H. influenzae isolates rose by 90% (n = 209 in Q1/2023 vs. mean Q1/2017-2019 = 110, 95% CI [79; 142]), compared to pre-pandemic seasonal peak values. The number of invasive S. pneumoniae isolates was high in two quarters (n = 1732 in Q4/2022 und Q1/2023). Adults aged 55 and older and children younger than 5 years were most affected by invasive H. influenzae, S. pneumoniae, and S. pyogenes infections. N. meningitidis was most commonly found in children under age 5. CONCLUSION: The reason for the marked rise in invasive bacterial infections may be an increased circulation of respiratory pathogens and elevated susceptibility in the population after relaxation of the measures taken to prevent COVID-19 infection. Coinfections with respiratory viruses may have reinforced this effect. We recommend continuous surveillance, preventive measures such as raising awareness about invasive bacterial diseases, and vaccination as recommended by the German Standing Committee on Vaccinations (STIKO).

[Role, working methods and recommendations of the Standing Committee on Vaccinations (STIKO) in the context of the COVID-19 pandemic]. / Rolle, Arbeitsweise und Empfehlungen der Ständigen Impfkommission (STIKO) im Kontext der COVID-19-Pandemie.

The Standing Committee on Vaccination (STIKO) is a voluntary body whose 18 experts are appointed by the Federal Ministry of Health. The scientific work of STIKO is supported by a scientific secretariat at the Robert Koch Institute. The STIKO develops independent vaccination recommendations for Germany using the methodology of evidence-based medicine (EBM).During the COVID-19 pandemic, STIKO faced major challenges. Several COVID-19 vaccines based on new technologies were approved within a very short time. The benefit-risk assessment had to be carried out according to the current state of knowledge. The vaccination recommendations had to be continuously adapted to the constantly changing epidemiology of SARS-CoV­2, increasing vaccine availability, new approvals, extensions of indications, and safety signals of vaccines. STIKO has adapted its way of working to the situation; the experts showed an impressive commitment during the pandemic. Even under time pressure, STIKO adhered to the principles of EBM and developed evidence-based vaccination recommendations. Before the final decision was made, STIKO submitted every vaccination recommendation to a commenting procedure with the stakeholders (e.g., medical societies and health authorities). Despite the short deadlines, the stakeholders made extensive and constructive comments and gave STIKO the opportunity to discuss and adapt their recommendations, consider the feedback, and thus build on a broad consensus.The past few months have shown that it is possible and rational to developing vaccination recommendations based on the principles of EBM even during a pandemic. Sufficient human resources in the STIKO office are essential.