Background There is uncertainty about the mode of transmission of the severe acute respiratory
syndrome (SARS) virus. We analyzed the temporal and spatial distributions of cases in a …

During the rapid rise in COVID-19 illnesses and deaths globally, and notwithstanding
recommended precautions, questions are voiced about routes of transmission for this pandemic …

Background The role of aerosols in the transmission of SARS-CoV-2 remains debated. We
analysed an outbreak involving three non-associated families in Restaurant X in Guangzhou, …

We identified seasonal human coronaviruses, influenza viruses and rhinoviruses in exhaled
breath and coughs of children and adults with acute respiratory illness. Surgical face masks …

Size distributions of expiratory droplets expelled during coughing and speaking and the
velocities of the expiration air jets of healthy volunteers were measured. Droplet size was …

A susceptible person experiences the highest exposure risk of respiratory infection when he
or she is in close proximity with an infected person. The large droplet route has been …

Although airborne transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
has been recognized, the condition of ventilation for its occurrence is still being …

Analytical solutions are derived for calculating natural ventilation flow rates and air temperatures
in a single-zone building with two openings when no thermal mass is present. In these …

It is essential to understand where and how severe acute respiratory syndrome coronavirus
2 (SARS‐CoV‐2) is transmitted. Case reports were extracted from the local Municipal Health …

A new expiratory droplet investigation system (EDIS) was used to conduct the most comprehensive
program of study to date, of the dilution corrected droplet size distributions produced …