“Young children may be at higher risk than adults based on a typical downward cough trajectory. Young teenagers and short adults should maintain a social distance from those taller than 2 meters,” Research written in research. “Surgical masks are known to be effective at trapping large water droplets and are therefore recommended for use when needed.”;
The researchers ran simulations with different droplet sizes, air temperature, relative humidity, wind speed, and different distance between speaker and listener.
This study shows that at a wind speed of 2 meters per second – equivalent to about 4 miles per hour – the travel distance for drops around the sizes of 100 micrometres and 1,000 micrometres can reach 21.6 feet and 4. feet, respectively, at 86 degrees Fahrenheit.
For a drop of 100 micrometres, the researchers found that the travel distance increased from about 3 feet without wind to about 22 feet with wind speeds of about 6.7 miles per hour.
The study has a number of limitations, including simulation-based results – not actual experiments – and the effect of ambient temperature and humidity on coronavirus viability is still unclear.