“Respiratory syncytial virus (RSV) — RSV is a virus that commonly causes pneumonia in children. A vaccine was made by growing RSV, purifying it, and inactivating it with the chemical formaldehyde. In clinical trials, children who were given the vaccine were more likely to develop or die from pneumonia after infection with RSV. As a result of this finding, the vaccine trials stopped, and the vaccine was never submitted for approval or released to the public.
Measles — An early version of measles vaccine was made by inactivating measles virus using formaldehyde. Children who were vaccinated and later became infected with measles in the community developed high fevers, unusual rash, and an atypical form of pneumonia. Upon seeing these results, the vaccine was withdrawn from use, and those who received this version of the vaccine were recommended to be vaccinated again using the live, weakened measles vaccine, which does not cause ADE and is still in use today.”
Rumor #1: I've heard the Chinese vaccines don't work very well? Is that true?
"No, that's not true," says epidemiologist Ben Cowling at the University of Hong Kong. "Our research in Hong Kong has shown that's not true. I don't have a concern about the effectiveness of the Chinese vaccine."
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But – and this is key – in a study by Cowling and his team, the Chinese vaccines offered just as much protection against severe disease as the mRNA vaccines for adults under age 60.
Last winter, Hong Kong suffered a massive omicron surge. And this outbreak allowed Cowling and his colleagues to test how well the Chinese vaccine CoronaVac fared compared to the Pfizer vaccine in a faced-to-face match. About half the population in Hong Kong had received CoronaVac and the other half had received the Pfizer vaccine. Altogether, more than 13 million doses had been administered to Hong Kong's 7.4-million people.
And guess what happened?
"We showed very clearly that both vaccines provide a high level of protection against severe COVID," Cowling says.
“A meta-analysis of 6 randomized controlled trials of non-SARS-CoV-2-specific IVIG with 472 patients demonstrated no survival benefit from the use of IVIG in patients with COVID-19 when compared with controls.
Recommendations
* The COVID-19 Treatment Guidelines Panel (the Panel) recommends against the use of intravenous immunoglobulin (IVIG) for the treatment of acute COVID-19 in adults and children, except in a clinical trial (AIII). This recommendation should not preclude the use of IVIG when otherwise indicated for the treatment of complications that arise during the course of COVID-19.
* The Panel recommends using IVIG in combination with low to moderate dose glucocorticoids in hospitalized patients for the treatment of multisystem inflammatory syndrome in children (MIS-C) (AIIb).
* The Panel recommends against the routine use of IVIG monotherapy for the treatment of MIS-C unless glucocorticoid use is contraindicated (AIIb).”