HEALTH | Coronavirus Can Persist In Air For Hours And On Surfaces For Days: Study

The highly contagious novel coronavirus that has exploded into a global pandemic can remain viable and infectious in droplets in the air for hours and on surfaces up to days, according to a new study that should offer guidance to help people avoid contracting the respiratory illness called COVID-19.

Scientists from the National Institute of Allergy and Infectious Diseases (NAID), part of the U.S. National Institutes of Health, attempted to mimic the virus deposited from an infected person onto everyday surfaces in a household or hospital setting, such as through coughing or touching objects.

They used a device to dispense an aerosol that duplicated the microscopic droplets created in a cough or a sneeze.

The scientists then investigated how long the virus remained infectious on these surfaces, according to the study that appeared online in the New England Journal of Medicine on Tuesday – a day in which U.S. COVID -19 cases surged past 5,2000 and deaths approached 100.

The tests show that when the virus is carried by the droplets released when someone coughs or sneezes, it remains viable, or able to still infect people, in aerosols for at least three hours.

On plastic and stainless steel, viable virus could be detected after three days. On cardboard, the virus was not viable after 24 hours. On copper, it took 4 hours for the virus to become inactivated.

In terms of half – life, the research team found that it takes about 66 minutes for half the virus particles to lose function if they are in an aerosol droplet.

The means that after another hour and six minutes, three quarters of the virus particles will be essentially inactivated but 25% will still be viable.

The amount of viable virus at the end of the third hour will be down to 12.5% according to the research led by Neeltie van Doremalen of the NAID’s Montana facility at Rocky Mountain Laboratories.

On stainless steel, it takes 5 hours 38 minutes for half  of the virus particles to become inactive. On plastic, the half-life is 6 hours 49 minutes, researchers found.

On cardboard, the half-life was about three and a half hours, but the researchers said there was a lot of variability in those results ‘so we advise caution’ interpreting the number.

The shortest survival time was on copper, where half the virus became inactivated within 46 minutes.


Angelina Jolie Discusses Life As A single Mon: ‘I’ve Been Alone A Long Time Now’

Angelina Jolie is opening up about being a single mother of six. The ‘Maleficent’ actress appeared on E!’s ‘Daily Pop’ this week to discuss her upcoming film, ‘Those Who Wish Me Dead’, in which she dished on her life at home with her children. Asked how she juggles it all, from her Hollywood career, humanitarian … Continue reading Angelina Jolie Discusses Life As A single Mon: ‘I’ve Been Alone A Long Time Now’

Madame Tussauds Moves Prince Harry And Meghan Waxworks From Royals

A year after leaving their royal duties to move to Los Angeles, Madame Tussauds has now decided waxwork models of Prince Harry and his wife Meghan now belonging in the attraction’s Hollywood zone and not with the other members of House of Windsor. The couple, the Duke and Duchess of Sussex, quit royal duties to … Continue reading Madame Tussauds Moves Prince Harry And Meghan Waxworks From Royals

Da Vinci’s ‘Head Of Bear’ Drawing Seen Fetching up to $16 Mln

A drawing of a bear’s head by Leonardo da Vinci is seen fetching up to $16.7 million, potentially setting a record, when it heads to auction in July, Christie’s said on Saturday. Measuring 7 cm (just under 3 inches) squared, ‘Head of Bear’ is a silverpoint drawing on a pink – beige paper. The auction … Continue reading Da Vinci’s ‘Head Of Bear’ Drawing Seen Fetching up to $16 Mln

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s