Alistair Hill, Director of Public Health for Brighton & Hove City Council explains why being indoors, with lots of different people, for longer periods of time, can significantly increase the risk of the Covid-19 spreading
“The Covid virus spreads in particles that come out of our nose and mouth when we laugh, cough, sneeze and speak. It takes hold in the body when we breathe in - that's why testing involves a swab up the nose and down the back of the throat.
“Larger particles on our breath fall to the ground, like raindrops. But some are so small they can float in the air and travel further - similar to aerosol hairspray, cigarette smoke or steam. These small particles appear to cause outbreaks so a 2m distance may not always be enough in every situation, especially indoors.
“Good airflow dilutes and blows away aerosol droplets making it less likely you'll inhale enough to become ill. Think of the difference between sitting in a closed room with someone smoking compared with being with them while they smoke outside. That is why ventilation is so important in the fight against Covid.
“Being indoors, with lots of different people, for longer periods of time, can significantly increase the risk of the virus spreading.
Ask for windows and doors to be kept open to let fresh air circulate
"Outdoors is still much safer than being indoors. Try to avoid enclosed spaces, reduce how long you stay inside and don’t sit too close to other people.
“When you are inside with other people, make sure you've got some way to get fresh air circulating by opening windows and keeping doors open.
“This is just as important for everyone who’s already had their first or second vaccination.
“Even though we can meet indoors again, you don’t have to. It’s okay to ask for windows and doors to be kept open to let fresh air circulate, and to keep wearing your face mask for an extra layer of protection if you want to.”