We describe the lessons learned during a SARS-CoV-2 variant-of-concern Alpha outbreak investigation at a normal care unit in a university hospital in Amsterdam in December 2020. The outbreak consisted of nine nurses and two roomed-in patient family members. (attack rate 18%). One nurse tested positive with a phylogenetically distinct variant, after a documented infection 83 days prior. Three key points were taken from this investigation. First, it was controlled by adherence to existing guidelines, despite increased transmissibility of the variant. Second, viral sequencing can inform transmission cluster inference, but the epidemiological context is essential to draw appropriate conclusions. Third, reinfections with Alpha variants can occur rapidly after primary infection.
【저자키워드】 Nosocomial transmission, Outbreak investigation, Infection prevention and control, Infection control guidelines, 【초록키워드】 SARS-CoV-2, Sequencing, variant, Infection, Transmission, Reinfection, Viral, Transmissibility, outbreak, attack rate, Patient, Outbreak investigation, Cluster, Alpha, epidemiological, Alpha variant, Care, Primary infection, Nurse, patient family, university hospital, positive, second, tested, nine, occur, phylogenetically, 【제목키워드】 SARS-CoV-2, Reinfection, outbreak, Rapid,