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The risk of coronavirus infection outdoors is generally very limited.
Recent studies speak of only one case in 1,000, so walking, playing sports on the beach or in the park, sunbathing on a lounger or watching the movies under the stars are safe activities.
However, even outdoors, although rarely, there can be chances of contagion.
When?
In every situation there are always two variables to take into account: the
distance
and the
length of stay
.
Distance and time of stay
Even outdoors, although rarely, there can be chances of contagion: it all depends on the distance and the length of stay.
The risk of contagion begins to become not negligible if you are in front of an infected person who speaks for more than 15 minutes at less than a meter and a half away.
Ultraviolet rays
Help to fight the virus in summer comes from ultraviolet rays.
The UV-A and UV-B rays that reach the Earth are capable of inactivating the virus in a few tens of seconds.
A fast time, but it is not known if enough to avoid contagion at close range.
Wind
The wind always has different intensity and directions and dilutes the concentration of the virus, just as it happens with fine dust.
For its part, the sea breeze helps the spread of the virus by reducing the possible inhaled dose compared to a similar exposure in the absence of wind.
Masks and vaccines
From the end of June it is no longer mandatory to wear masks outdoors.
Therefore, all the scenarios below assume the absence of masks and refer to unvaccinated people.
The risks of contagion from Covid decrease dramatically for those who are immunized depending on the protection of the individual vaccine and the phase of the vaccination cycle in which they are.
On the beach on the deck chair
Lying in the hammock to sunbathe, even just 30 centimeters from the umbrella neighbor, the risk of contagion is practically nil, as long as you do not speak.
Speaking, however, more drops and sprays are emitted.
For this reason, it is better to avoid chatting under umbrellas if a distance of one and a half meters cannot be guaranteed: at shorter distances the risk of contagion can increase up to 10%.
In the sea and in the pool
It is unlikely that the coronavirus released by an infected person swimming will survive because the viral load is dispersed rapidly thanks to the action of currents, ultraviolet rays and the salinity of the water.
The pools themselves are also safe: chlorine is a virucidal.
In any case, a distance of at least half a meter must be maintained between bathers.
In the changing rooms and changing rooms
The booths are very small, but very little time is spent in them and any aerosols released by those who preceded us are quickly dispersed once the door is opened.
Therefore, the risk of contagion should be considered almost zero.
Fitness on the beach, spinning and soccer
Activities such as spinning or fitness require a greater cardiovascular effort with the emission of more droplets and aerosols.
With a distance of one and a half meters, these sports are safe because the outside spray is dispersed.
Basketball and futsal are contact sports and there is no "safe distance".
However, the times in which athletes stay very close are short and the risk of contagion, consequently, is limited.
At the bar counter
At the bar, if only two words are exchanged, the order time (10 seconds), at a distance of five feet the risks are negligible.
At a shorter distance, 80 centimeters, the risk of contagion remains limited (0.1%).
Things change if the conversation lasts a minute: at 80 centimeters the risk rises to 1% and it is no longer negligible.
In this case, to stay safe, the distance must be extended beyond one meter.
In the restaurant
Eating lunch or dinner in the restaurant, even outdoors, are potentially the highest risk activities because exposure is prolonged and distances are shortened.
If at a table the conversation lasts more than 15 minutes at a distance of one meter from the infected person, the risk of contagion for those who are seated reaches 10%.
By increasing the distance between diners to a meter and a half, the risk of contagion falls below 0.1%.
Beyond a meter and a half the danger is negligible.
At an open-air concert or cinema
Going to the cinema or to a classical music concert in the open air are not dangerous activities and the risk of contagion is practically zero as long as you sit with the chairs one meter away.
Since there is no talk during the show, the distances could be shortened to half a meter, maintaining the same level of safety.
At the disco
The disco, even outdoors, is still a dangerous activity.
Dancing, singing or talking loudly on the dance floor, all together even for hours, makes the stage unsafe.
According to the criteria of The Trust Project
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