[Infectious disease : what's new in 2025].

In 2025, several studies have shaped the field of infectious diseases. Cefazolin has replaced anti-staphylococcal penicillins for treating Staphylococcus aureus bacteremia, while shorter 7-day courses are sufficient for other bloodstream infections. Treating the male partner in cases of bacterial vaginosis reduces recurrence risk among heterosexual couples. In virology, tecovirimat has proven ineffective against clade 1 monkeypox virus, declared a global health emergency, highlighting the need for new treatments. Finally, respiratory infection prevention is advancing with RSV vaccination for adults over 60 and a new monoclonal antibody against SARS-CoV-2, sipavibart.