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Covid-19: CDC revises guidance, says virus can spread through airborne transmission

The CDC’s updated guidane insists that Covid-19 can sometimes be spread by airborne transmission.

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CBN, THE SILVER LININGS OF COVID-19

The United States’ Centers for Disease Control and Prevention (CDC), on Monday, revealed that COVID-19 can spread through virus lingering in the air, sometimes for hours, thereby reversing its earlier pronouncement and acknowledging concerns widely voiced by public health experts about the airborne transmission of the virus.

In the updated guidance, the CDC said that Covid-19 can sometimes be spread by airborne transmission. It said some infections can be spread by exposure to the virus in small droplets and particles, or aerosols, that can linger in the air for minutes to hours.

READ: Fake labs, travel frustrations, passengers allege COVID-19 test Scams at airport

The CDC’s updated guidance comes weeks after the agency published, and then took down a similar warning, sparking debate over how the virus spreads.

In Monday’s guidance, CDC said there was evidence that people with COVID-19 possibly infected others who were more than 6 feet away, within enclosed spaces with poor ventilation.

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READ: UK’s CDC Group invests $39.2 million in West Africa

Under such circumstances, CDC said scientists believe the amount of infectious smaller droplets and particles, or aerosols, produced by the people with COVID-19 become concentrated enough to spread the virus.

The CDC has long warned of transmission through small droplets that shoot through the air and generally fall to the ground, which resulted in the six-feet social distancing rule. Aerosol droplets are much smaller still and can remain suspended in the air, like smoke.

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READ: UK to roll out COVID-19 vaccine in less than 3 months and mass vaccination by Easter

A group of US scientists had warned on Monday that aerosols lingering in the air could be a major source of COVID-19 transmission, although CDC stresses that close-contact transmission is more common than through air.

Some researchers in a press call said, “The reality is the airborne transmission is the main way that transmission happens at close range with prolonged contact.’

The researchers disclosed that viruses in aerosols can remain in the air for seconds to hours, travel more than two meters and accumulate in poorly ventilated indoor air, leading to super spreading events.

READ MORE: Thrive Agric: Investors cry foul play over delayed returns

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Since individuals with COVID-19 release thousands of virus-laden aerosols and far fewer droplets while breathing and talking, the scientists said the focus must be on protecting against airborne transmission.

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“The new guidance is also clear about asymptomatic transmission as it said that people who are infected but do not show symptoms can also spread the virus to others,” it says.

They also said that public health officials should clearly differentiate between droplets ejected by coughing or sneezing and aerosols that can carry the virus to greater distances.

READ: UK financial institution to put $5 billion to work in Nigeria, others 

Public health officials must highlight the importance of moving activities outdoors and improving indoor air, along with wearing a mask and social distancing, the letter said.

It can be recalled that many researchers and doctors have said for months that coronavirus can be transmitted through small airborne viral particles. In July, 239 scientists published a letter that urged the World Health Organization and other public health organizations to be more forthcoming about the likelihood that people could catch the virus from droplets floating in the air.

Chike Olisah is a graduate of accountancy with over 15 years working experience in the financial service sector. He has worked in research and marketing departments of three top commercial banks. Chike is a senior member of the Nairametrics Editorial Team. You may contact him via his email- [email protected]

2 Comments

2 Comments

  1. Anonymous

    October 7, 2020 at 10:27 am

    Why do we have many conflicting information on this thing

    • Be-ing

      October 7, 2020 at 6:08 pm

      Ppl benefiting from the uncertainty/fear

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Coronavirus

COVID-19: Jason Njoku and wife test positive

iROKOtv CEO and wife have contracted the novel coronavirus.

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Jason Njoku and Wife testes positive to Covid-19

Jason Chukwuma Njoku, the co-founder and CEO of iROKOtv and his wife has tested positive for COVID-19. However, Mrs. Mary Njoku is feeling well.

Jason,  disclosed this via his Twitter handle stating that “My enemies are hard at work in 2020. Mrs. Njoku and I tested positive for Covid-19. I’m not feeling great, but Mary is well. Literally no idea how I caught it. But we shall see this pass too.”

The media mogul did not reveal if his children caught the virus too.

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Coronavirus

Covid-19: Russia applies to WHO for emergency use tag for its vaccine

Russia has submitted applications to the World Health Organization for approval of its COVID-19 vaccine, Sputnik V.

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COVID-19 vaccine from Russia

The Russian Direct Investment Fund (RDIF), which is one of the developers of the Sputnik V, has submitted applications to the World Health Organization (WHO) for an Emergency Use Listing and prequalification of the coronavirus vaccine.

The acceptance of the Covid-19 vaccine by the UN health agency could help allay concerns over its safety and quality.

This was disclosed by Russia’s sovereign wealth fund on Tuesday, October 27, 2020.

READ: WHO endorses emergency use of China’s COVID-19 vaccine

READ: Covid-19: AstraZeneca vaccine gets huge boost, produces immune response in elderly

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Russia was the first country to grant regulatory approval for a novel coronavirus vaccine and did so before large-scale trials were complete, stirring concerns among scientists and doctors about the safety and efficacy of the shot, especially from the western countries.

An Emergency Use Listing (EUL) is meant to make a vaccine available globally faster, while a WHO prequalification is a global quality tag that ensures vaccines are safe and effective.

READ: Crude oil prices post losses, fears on surge in COVID-19 caseloads strengthen

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READ: Moderna to get desired result for final COVID-19 vaccine trials in 5 months

The Chief Executive Officer of RDIF, Kirill Dmitriev, in a statement, pointed out that the procedures would allow Sputnik V to be included in the list of medical products that meet leading quality, safety and efficacy standards.

In July, Dmitriev had said that Russia aimed to produce 30 million doses in 2020, a goal that was this month dubbed impossible by Russia’s Industry Minister, Denis Manturov, who said a maximum of 2.3 million doses would be made.

The vaccine, developed by Moscow’s Gamaleya Research Institute and marketed by RDIF, is based on a platform of human adenoviral vectors.

READ: Covid-19: US FDA grants full approval to remdesivir as first vaccine to treat coronavirus

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What you should know

Nairametrics had earlier reported that President Vladimir Putin announced the approval of the Sputnik V, as the first Covid-19 vaccine to be registered in the world. The approval, which was announced even before the completion of the phase 3 trials, had elicited safety concerns from scientists.

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Coronavirus

COVID-19 Update in Nigeria

On the 27th of October 2020, 113 new confirmed cases and 3 deaths were recorded in Nigeria

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The spread of novel Corona Virus Disease (COVID-19) in Nigeria continues to record significant increases as the latest statistics provided by the Nigeria Centre for Disease Control reveal Nigeria now has 62,224 confirmed cases.

On the 27th of October 2020, 113 new confirmed cases and 3 deaths were recorded in Nigeria, having carried out a total daily test of 2,326 samples across the country.

To date, 62,224 cases have been confirmed, 57,916 cases have been discharged and 1,135 deaths have been recorded in 36 states and the Federal Capital Territory. A total of 614,480 tests have been carried out as of October 27th, 2020 compared to 612,154 tests a day earlier.

COVID-19 Case Updates- 27th October 2020,

  • Total Number of Cases – 62,224
  • Total Number Discharged – 57,916
  • Total Deaths – 1,1135
  • Total Tests Carried out – 614,480

According to the NCDC, the 113 new cases were reported from 12 states- Lagos (51), FCT (15), Plateau (11), Kaduna (8), Oyo (8), Rivers (8), Ogun (4), Edo (2), Imo (2), Kwara (2), Delta (1), Kano (1).

Meanwhile, the latest numbers bring Lagos state total confirmed cases to 20,935, followed by Abuja (6,008), Plateau (3,614), Oyo (3,433), Rivers (2,781), Edo (2,654), Kaduna (2,625), Ogun (2,014), Delta (1,813), Kano (1,743), Ondo (1,666), Enugu (1,314),  Kwara (1,069), Ebonyi (1,049), Katsina (952), Osun (923), Abia (898), Gombe (883).  Borno (745), and Bauchi (710).

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Imo State has recorded 616 cases, Benue (486), Nasarawa (479), Bayelsa (403),  Ekiti (332), Jigawa (325), Akwa Ibom (295), Anambra (277), Niger (274), Adamawa (257), Sokoto (165), Taraba (140), Kebbi (93), Cross River (87), Yobe (82), Zamfara (79), while Kogi state has recorded 5 cases only.

READ ALSO: COVID-19: Western diplomats warn of disease explosion, poor handling by government

Lock Down and Curfew

In a move to combat the spread of the pandemic disease, President Muhammadu Buhari directed the cessation of all movements in Lagos and the FCT for an initial period of 14 days, which took effect from 11 pm on Monday, 30th March 2020.

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The movement restriction, which was extended by another two-weeks period, has been partially put on hold with some businesses commencing operations from May 4. On April 27th, 2020, Nigeria’s President, Muhammadu Buhari declared an overnight curfew from 8 pm to 6 am across the country, as part of new measures to contain the spread of the COVID-19. This comes along with the phased and gradual easing of lockdown measures in FCT, Lagos, and Ogun States, which took effect from Saturday, 2nd May 2020, at 9 am.

On Monday, 29th June 2020 the federal government extended the second phase of the eased lockdown by 4 weeks and approved interstate movement outside curfew hours with effect from July 1, 2020. Also, on Monday 27th July 2020, the federal government extended the second phase of eased lockdown by an additional one week.

On Thursday, 6th August 2020 the federal government through the secretary to the Government of the Federation (SGF) and Chairman of the Presidential Task Force (PTF) on COVID-19 announced the extension of the second phase of eased lockdown by another four (4) weeks.

READ ALSO: Bill Gates says Trump’s WHO funding suspension is dangerous

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