Background As we are confronted with more transmissible/severe variants with immune
escape and the waning of vaccine efficacy, it is particularly relevant to understand how the …

Abstract Background The SARS-CoV-2 transmission dynamics have been greatly
modulated by human contact behaviour. To curb the spread of the virus, global efforts …

Background Most countries have enacted some restrictions to reduce social contacts to slow
down disease transmission during the COVID-19 pandemic. For nearly two years …

To mitigate the spread of SARS-CoV-2, the Swiss government enacted restrictions on social
contacts from 2020 to 2022. In addition, individuals changed their social contact behavior to …

The COVID-19 pandemic was in 2020 and 2021 for a large part mitigated by reducing
contacts in the general population. To monitor how these contacts changed over the course …

Background One of the primary aims of contact restriction measures during the SARS-CoV-2
pandemic has been to protect people at increased risk of severe disease from the virus …

Background COVID-19 vaccination was expected to reduce SARS-CoV-2 transmission, but
the relevance of this effect remains unclear. We aimed to estimate the effectiveness of …

The response to the COVID-19 pandemic in the US prompted abrupt and dramatic changes
to social contact patterns. Monitoring changing social behavior is essential to provide …

Background Since the beginning of the COVID-19 pandemic, many countries, including
Canada, have adopted unprecedented physical distancing measures such as closure of …

Immunocompromised persons are at an increased risk for a severe SARS-CoV-2 infection
and their safety behaviors may influence their social participation. Vaccinated persons have …