Scientists see downsides to top COVID-19 vaccines from Russia, China

South Africa News News

Scientists see downsides to top COVID-19 vaccines from Russia, China
South Africa Latest News,South Africa Headlines
  • 📰 ewnupdates
  • ⏱ Reading Time:
  • 44 sec. here
  • 2 min. at publisher
  • 📊 Quality Score:
  • News: 21%
  • Publisher: 53%

Scientists see downsides to top COVID19 vaccines from Russia, China

TORONTO/CHICAGO – High-profile COVID-19 vaccines developed in Russia and China share a potential shortcoming: They are based on a common cold virus that many people have been exposed to, potentially limiting their effectiveness, some experts say.

Vaccines are seen as essential to ending the pandemic that has claimed over 845,000 lives worldwide. Gamaleya has said its two-virus approach will address Ad5 immunity issues. But many people already have antibodies against Ad5, which could cause the immune system to attack the vector instead of responding to the coronavirus, making these vaccines less effective.

“I think they will get good immunity in people that don’t have antibodies to the vaccine, but a lot of people do,” said Dr. Hildegund Ertl, director of the Wistar Institute Vaccine Center in Philadelphia. “I would be worried about the use of those vaccines in any country or any population that was at risk of HIV, and I put our country as one of them,” said Dr. Larry Corey, co-leader of the U.S. Coronavirus Vaccine Prevention Network, who was a lead researcher on the Merck trial.

We have summarized this news so that you can read it quickly. If you are interested in the news, you can read the full text here. Read more:

ewnupdates /  🏆 30. in ZA

South Africa Latest News, South Africa Headlines

Similar News:You can also read news stories similar to this one that we have collected from other news sources.

Potential issues with Ad5 Covid-19 vaccines from Russia and ChinaSome scientists also worry an Ad5-based vaccine could increase chances of contracting HIV
Read more »

Potential issues with Ad5 Covid-19 vaccines from Russia and ChinaSome scientists also worry an Ad5-based vaccine could increase chances of contracting HIV
Read more »

SANBS looking at blood plasma as possible COVID-19 treatmentSANBS looking at blood plasma as possible COVID-19 treatmentAs researchers across the globe, including South Africa, do their bit to find a vaccine for COVID-19, SANBS is also partaking in trials.
Read more »

2 weeks into level 2, SA sees 1,764 COVID-19 deaths & nearly 33,000 new cases2 weeks into level 2, SA sees 1,764 COVID-19 deaths & nearly 33,000 new casesThe Health Department and scientists are urging South Africans not to be complacent as the number of infections could still increase if social distancing regulations are not adhered to.
Read more »

ARM pays dividend amid higher iron ore and PGM pricesHigher metal prices boosted African Rainbow Minerals, despite the Covid-19 pandemic.
Read more »

SA's COVID-19 death toll exceeds 14,000SA's COVID-19 death toll exceeds 14,000The health department reported 47 COVID-19 related deaths in the last 24 hours.
Read more »



Render Time: 2025-02-13 00:12:52