New Brazil data shows disappointing 50.4% efficacy for China's CoronaVac vaccine

[anchadian]

https://www.reuters.com/article/us-health-coronavirus-brazil-coronavirus/new-brazil-data-shows-disappointing-50-4-efficacy-for-chinas-coronavac-vaccine-idUSKBN29H2CE

SAO PAULO (Reuters) - A coronavirus vaccine developed by China’s Sinovac Biotech was just 50.4% effective at preventing symptomatic infections in a Brazilian trial, researchers said on Tuesday, barely enough for regulatory approval and well below the rate announced last week.

[spidermike007]

OK. Now we have yet another vaccine we can avoid, in favor of the ones which are more effective. Why am I not surprised a Chinese vaccine would be less effective?

[PPMMUU]

50.4% effective means those who got the vaccine will have 50.4% less chance of contracting COVID-19 than those who did not get the vaccine.

 

Doesn't mean that those who got the vaccine will have 50.4% chance of contracting COVID-19.

[internationalism]

about this vax:

"Butantan Institute also said the vaccine is 78 percent effective in preventing mild cases that needed treatment, and 100 percent effective in staving off moderate to serious cases – an important part of the story that didn’t make it to many articles translated and published by Thai media. "

https://www.khaosodenglish.com/news/crimecourtscalamity/2021/01/14/heres-the-truth-behind-50-4-efficacy-of-chinese-vaccine-left-out-by-thai-media/

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8 hours ago, internationalism said:

about this vax:

"Butantan Institute also said the vaccine is 78 percent effective in preventing mild cases that needed treatment, and 100 percent effective in staving off moderate to serious cases – an important part of the story that didn’t make it to many articles translated and published by Thai media. "

https://www.khaosodenglish.com/news/crimecourtscalamity/2021/01/14/heres-the-truth-behind-50-4-efficacy-of-chinese-vaccine-left-out-by-thai-media/

The only place I have seen that information is in khao sod. Nowhere else. And a claim that the vaccine is 100% effective in warding off moderate to serious cases is just not believable. Come up with a better source.