Herd immunity

Outbreak

Internal medicine

Virology

Immunology

Vaccination

Virus

Disease

Viral disease

Paramyxoviridae

Population

2019-20 coronavirus outbreak

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)

Coronavirus disease 2019 (COVID-19)

Infectious disease (medical specialty)

Respiratory system

Medicine

Pandemic

Environmental health

Pediatric Pulmonology

The diffusion of the SARS‐CoV‐2 virus and the implementation of restrictive measures led to a drastic reduction of respiratory syncytial virus (RSV) diffusion. Few RSV cases have been detected worldwide, even after the removal of the restrictions. We review the current literature and present possible explanations on why there has been a significant reduction of RSV detection during the COVID‐19 pandemic. We also hypothesize what may happen when RSV begins to circulate again. The increase of an immunologically naïve population, with infants born from mothers who have not reinforced their immunity to RSV, could lead to greater RSV epidemics in the coming seasons. It is crucial to prepare the scientific community and to keep RSV surveillance active to avoid dramatic consequences.

During the COVID‐19 pandemic where has respiratory syncytial virus gone?