United Front International
No Result
View All Result
Tuesday, October 3, 2023
  • Login
  • Register
  • Home
  • US
  • World
  • Politics
  • Health and Wellness
  • Videos
  • Be in the Know
  • ShopNew
Contact us
United Front International
  • Home
  • US
  • World
  • Politics
  • Health and Wellness
  • Videos
  • Be in the Know
  • ShopNew

No products in the cart.

No Result
View All Result
United Front International
No Result
View All Result
Home Health and Wellness

Pfizer shot less effective in South Africa after Omicron emerges, study shows

by admin
December 14, 2021
in Be in the Know, Health and Wellness
Pfizer shot less effective in South Africa after Omicron emerges, study shows

Vials labelled "VACCINE Coronavirus COVID-19" and a syringe are seen in front of a displayed Pfizer logo in this illustration taken December 11, 2021. REUTERS/Dado Ruvic/Illustration

Share on FacebookShare on Twitter

Reuters
By Alexander Winning and Wendell Roelf

Pfizer-BioNTech’s COVID-19 vaccine has been less effective in South Africa at keeping people infected with the virus out of hospital since the Omicron variant emerged last month, a real-world study published on Tuesday showed.

Between Nov. 15 and Dec. 7, people who had received two doses of the shot had a 70% chance of avoiding hospitalisation, down from 93% during the previous wave of Delta infections, the study showed.

When it came to avoiding infection altogether, the study by South Africa’s largest private health insurance administrator, Discovery Health, showed that protection against catching COVID-19 had slumped to 33% from 80% previously.

The findings from the real-world analysis are some of the first about the protection vaccines offer against Omicron outside of laboratory studies, which have so far shown a reduced ability to neutralise the virus

The study results were based on an analysis by Discovery’s (DSYJ.J) clinical research and actuarial teams in collaboration with the South African Medical Research Council (SAMRC).

South Africa alerted the world to Omicron in November, triggering alarm that it could cause another surge in global infections and leading to travel curbs on southern Africa. South Africa’s daily infections have since risen to more than 20,000, with 35% of tests coming back positive in figures reported on Tuesday, and a further 600 hospital admissions and 24 deaths.

The South African study was based on more than 211,000 COVID-19 test results of which 78,000 were attributed to Omicron, the variant labelled “of concern” by the World Health Organization and reported in more than 60 countries.

The 78,000 cases were attributed to Omicron based on the relative prevalence of the variant within the country over the study period, but because they have not been confirmed as being the new variant the study cannot offer conclusive findings.

South African scientists sent 630 positive COVID-19 tests for genome sequencing in November to see if they were Omicron and another 61 so far in December. Last month, 78% were confirmed as Omicron and all 61 this month were the new variant.

‘CONFOUNDING FACTOR’

Discovery cautioned that the study’s findings should be considered preliminary. Michael Head, senior research fellow in global health at the University of Southampton, also said there was a large degree of uncertainty for now about Omicron.

“It is important to avoid inferring too much right now from any national scenario. For example, the narrative around South Africa is that Omicron may be much milder, whereas reports out of Denmark broadly suggests the opposite,” he said.

South Africa is using the Pfizer-BioNTech (PFE.N), and Johnson & Johnson (JNJ.N) vaccines in its immunisation campaign, with more than 20 million Pfizer doses administered so far.

J&J and the SAMRC are conducting a large real-world study of J&J’s vaccine and recent analysis has shown no deaths from Omicron, SAMRC President Glenda Gray said.

“So that’s the good news, it shows again that the vaccine is effective against severe disease and death,” she said.

With at least 70% of the South African population estimated to have been exposed to COVID-19 over the past 18 months, high estimated levels of existing antibodies might skew the data.

“This could be a confounding factor for these hospital admission and severity indicators during this Omicron wave,” Ryan Noach, chief executive of Discovery Health, said in a briefing on the study.

The analysis showed protection against hospital admission was maintained across all ages, from 18 to 79 years, with slightly lower levels of protection for the elderly.

Protection against admission was also consistent across a range of chronic illnesses including diabetes, hypertension, hypercholesterolemia and other cardiovascular diseases.

REINFECTION RISK

The study concluded there was a higher risk of reinfection during the fourth wave than during previous waves and the risk of hospitalisation among adults diagnosed with COVID-19 was still 29% lower than during the country’s first wave last year.

Children appeared to have a 20% higher risk of hospital admission with complications during the fourth wave than during the first, despite a very low absolute incidence, it said.

“This is early data and requires careful follow up,” said Shirley Collie, chief health analytics actuary at Discovery Health.

However, this trend aligns with a warning in recent days from South Africa’s National Institute for Communicable Diseases (NICD) that during the country’s third wave from June to September they had seen an increase in paediatric admissions and now, in the fourth wave, they are seeing a similar increase in admissions for children under five, she said.

South African scientists have said they cannot confirm a link between Omicron and the high admissions of infants, which could be due to other factors.

Many unknowns still surround Omicron.

The WHO has said there were early signs that vaccinated and previously infected people would not build enough antibodies to ward off an Omicron infection, resulting in high transmission rates, but was unclear whether Omicron was inherently more contagious than the globally dominant Delta variant.

Pfizer and BioNTech said last week that two shots of their vaccine may still protect against severe disease, because its mutations were unlikely to evade the T-cells’ response.

Reporting by Alexander Winning and Wendell Roelf; Writing by Josephine Mason in London; Editing by Giles Elgood, David Clarke and Alex Richardson

Related

ShareTweetSendSend

Related Posts

In this undated photo 14-year-old Emmett L.Till from Chicago, is shown. (AP Photo, File)
US

For Emmett Till’s family, national monument proclamation cements his inclusion in the American story

July 26, 2023
CNN Beaten and abandoned in the desert -- migrants stranded at Tunisian border
Videos

Beaten and abandoned in the desert – migrants stranded at Tunisian border

July 25, 2023
President Joe Biden walks to his motorcade as he leaves Holy Trinity Catholic Church in the Georgetown section of Washington, after attending Mass, Saturday, July 22, 2023. (AP Photo/Manuel Balce Ceneta)
US

Biden will establish a national monument honoring Emmett Till, the Black teen lynched in Mississippi

July 23, 2023
US First Lady Jill Biden speaks during a Fourth of July event on the South Lawn of the White House in Washington, DC, US, on Tuesday, July 4, 2023. Ting Shen/Bloomberg/Getty Images
US

Jill Biden to travel to Paris to commemorate US rejoining UNESCO after Trump exit

July 22, 2023
Tony Bennett performs at Royal Albert Hall in London in 2017.Samir Hussein / WireImage file
Videos

Tony Bennett dead at 96: A look at his life and legacy

July 22, 2023
Iran's police forces stand on a street during the revival of the morality police in Tehran on Sunday. (Wana News Agency/Reuters)
Videos

The head of police in Iran announced the revival of the morality police’s hijab patrols

July 18, 2023

My Cart

No Content Available

Categories

  • Be in the Know
  • Health and Wellness
  • Politics
  • US
  • Videos
  • World

UnitedFrontIntl Store

My Account & Ordering
Cart
Checkout
Track My Order
Refund and Returns Policy
Privacy Policy
FAQs

Site Navigation

  • Home
  • Advertise
  • Contact Us
  • Jobs
  • About Us
  • Shipping Policy

Links

CNBC
Reuters

The New York Times
The Washington Post


Your tax-deductible gift is vital and will help us fund and maintain our website to bring you current news and information on a daily basis. Thank you in advance.

© 2022 United Front Intl

No Result
View All Result
  • Home
  • US
  • World
  • Politics
  • Health and Wellness
  • Videos
  • Be in the Know
  • Contact Us
  • Advertisement
  • Shop

© 2022 United Front Intl

Welcome Back!

Login to your account below

Forgotten Password? Sign Up

Create New Account!

Fill the forms below to register

All fields are required. Log In

Retrieve your password

Please enter your username or email address to reset your password.

Log In