UK doc says China's Sinovac vaccine more effective against Omicron variant than Pfizer's

[enhanced_deficit]

Heard a UK doc say that China's Sinovac vaccine was more effective against variants like Omicron because it used the actual coronavirus virus unlike spike-protein based vaccines like Pfizer's. There are also shifting claims about Pfizer's vax efficacy in last few days.


Pfizer vaccine: "41-fold drop" in the ability of the antibodies to neutralize the omicron variant compared with the original virus

Omicron significantly reduces Covid antibody protection in small study of Pfizer vaccine recipients

Published Tue, Dec 7 2021
Spencer Kimball

Key Points

• The Covid omicron variant significantly reduces antibodies generated by Pfizer and BioNTech’s vaccine, according to a small preliminary study released Tuesday.
• However, people who have recovered from the virus and received a booster shot will likely have more protection from severe disease, the South African researchers said.
• Pfizer and BioNTech published initial lab results on Wednesday that showed a booster provides significant protection against omicron.

Covid omicron variant may reduce antibodies produced by Pfizer and BioNTech’s vaccine
South African scientists say the Covid omicron variant significantly reduces antibody protection generated by Pfizer and BioNTech’s vaccine, although people who have recovered from the virus and received a booster shot will likely have more protection from severe disease, according to a small preliminary study released Tuesday.

Prof. Alex Sigal with the Africa Health Research Institute and a team of scientists tested blood samples of 12 people who had previously been vaccinated with the Pfizer/BioNTech vaccine. They were looking specifically at how well antibodies generated by the vaccine can neutralize the new variant — meaning block its ability to infect cells.

They found a 41-fold drop in the ability of the antibodies to neutralize the omicron variant compared with the original virus, a dramatic reduction from its performance against the original ancestral strain as well as other variants, according to a preprint of the study that hasn’t yet been peer-reviewed. Vaccine-induced antibodies dropped threefold in their ability to neutralize the earlier beta variant that previously dominated South Africa, suggesting omicron is much better at evading protection.

cnbc.com/2021/12/07/omicron-significantly-reduces-covid-antibody-protection-in-small-study-of-pfizer-vaccine-recipients.html



Pfizer CEO says 4th Covid vaccine doses may be needed sooner than expected

Published Wed, Dec 8 2021
Spencer Kimball

Key Points

• “When we see real-world data, will determine if the omicron is well covered by the third dose and for how long,” Pfizer CEO Albert Bourla told CNBC.
• “And the second point, I think we will need a fourth dose,” Bourla said.
• The Pfizer CEO originally expected a fourth dose 12 months after the third, but he told CNBC it might be needed faster than that.

PFE+0.04 (+0.08%)BNTX+0.76 (+0.26%)
cnbc.com/2021/12/08/omicron-pfizer-ceo-says-we-may-need-fourth-covid-vaccine-doses-sooner-than-expected.html



Tried to see if there was more info on that doc's claim, so far found this old report:

Sinovac vaccine works on UK, South African variants - Reuters
reuters.com › us-health-coronavirus-brazil
Feb 17, 2021 — The COVID-19 vaccine developed by China's Sinovac Biotech is effective against the UK and South African variants, the vaccine's Brazilian ...

 

[Brian4Liberty]

Pfizer vaccine: "41-fold drop" in the ability of the antibodies to neutralize the omicron variant compared with the original virus

That can’t be true. Just yesterday there were many government officials and pharma executives on TV that said the old vaccines are still effective against Omicron.