The current 2 meter social distance rule is ‘INSUFFICIENT’: researchers warn coronavirus droplets can spread THREE TIMES in cold and damp weather
- Scientists said the virus was likely to spread in cold and damp conditions
- But they said the 1.4-meter rule could effectively block 95 percent of the transmission
- Boris Johnson is preparing to reopen markets next month
- Here’s how you can help people affected by Covid-19
The two-meter (6.5 ft) social distance rule may need to triple when winter strikes, scientists have warned.
Chinese scientists discovered that certain weather conditions allow the disease to spread further into the air.
Their preliminary findings suggest that drops with the SARS-CoV-2 coronavirus can travel up to 20 feet (six meters) in cold and damp areas.
However, a 1.4m distance for social distance – less than current guidelines – is enough to block at least 95 percent of the virus regardless of the circumstances.
It comes as Boris Johnson prepares to open up external markets for the first time since the UK’s closure amidst a continuing decline in deaths and deaths.
The diagram shown above explains how coronavirus would spread under normal conditions. Aerosol cans are smaller and lighter and can spread further than droplets, but drops would be more contagious (shown)
Scientists at the universities of California, Santa Barbara and Stanford, have created a mathematical model to predict how the virus would spread under different weather conditions.
In each case, Covid-19 was launched at a speed of 4.1 m / s, the same as would be seen if it was left out while someone is talking.
They found that without a stricter social distance, the spread of Covid-19 is likely to accelerate in the winter months.
“The transmission pathway of COVID-19 via respiratory droplets is divided into short-range drip contacts and long-distance exposure to aerosols,” the scientists write in their study.
‘We show that the effect of weather conditions is not monotonous: low temperature and high humidity facilitate the transfer of drip contacts, while high temperature and low humidity facilitate the formation of aerosol particles and accumulation of particles with a diameter of 2.5 μm or less (PM2 ) promote. 5).
Our model suggests that the 6 ft social distance recommended by the Center for Disease Control and Prevention (CDC) may be insufficient in certain environmental conditions because the drop spreading distance may be as long as 6 m (19.7 ft) in cold and damp weather. “
But they also pointed out some limitations in the paper, which was published as a pre-print in medRxiv and has not yet been peer-reviewed.
People imagined visiting Brighton beach yesterday during the British holiday. Scientists warn that summer carries its own risks to public health, as the often dry summer heat can cause the droplets, considered the main form of transmission, to evaporate and form aerosols that can spread further
They said that more data was needed to draw definitive conclusions and because weather conditions don’t always have the same impact on the virus.
They also called for greater focus on building ventilation systems, which could unwittingly spread the virus to workers.
The warning comes as the UK draws closer to ending the lockdown.
Stores will also reopen soon without seats and one-way systems.
Britain recorded 134 coronavirus deaths today as the curve continued to flatten, indicating a possible end to the pandemic.
However, the scientists warn that summer comes with its own risks to public health
They write in their paper that the summer heat, which is often dry, can cause the droplets, which are considered the main form of transmission, to evaporate.
When this happens, they form aerosol particles, which are lighter and capable of transmitting a wider range.
These are only 2.5 micrometers in size and so small that they can penetrate deeply into the body’s respiratory system. These aerosols also have a “longer suspension time in warm and dry weather,” the authors say.
METHODS OF STOPPING CORONAVIRUS SPREAD
Infected people can spread an infection to others through direct or indirect exposure.
An outbreak will continue to spread if the average number of infected persons per courier exceeds one.
SOCIAL DISTANCING MEASURES
Forbidding group gatherings, closing borders, advising people to stay 1.5m apart, and locking people up to their home will stop the spread of the coronavirus.
With this method, the public is not given immunity in large numbers and the virus can dramatically reappear if controls are lifted.
People who recover from COVID-19 develop antibodies and immunity.
As the virus spreads through the population and more people develop immunity, fewer people can infect the virus.
If enough people have immunity, the outbreak will go away.
It is estimated that about 30 percent of people who contract the virus will show no symptoms, and for many more, the symptoms will not be severe.
This method causes a spike in infections that can overload healthcare, resulting in a large number of fatalities.
A COVID-19 vaccine would be the safest and most effective way to control the outbreak.
Several vaccines are currently under development, although they need to be tested, which can take many months.
If a vaccine is rushed without proper testing, side effects and complications can arise.