Chinese Sinovac vaccine is 67% effective, Chilean study finds

The Chinese Sinovac vaccine against Covid-19 he has one 67% effective in preventing viral infections, as a study with real world data by the Chilean authorities.

Analysis based on 10.5 million people belonging to the public health systemBetween February 2 and April 1, I measured the effect of the vaccine 14 days after applying the second required dose.

“These are fairly certain results in the sense that probably compared to the size of the study we are conducting, they give us reliable results,” said Rafael Araos, in charge of the study. Ministry of Health.

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In addition to the vaccine CoronaVac showed one 85% effectiveness in preventing admission to hospitalization, a 89% need an intensive care bed and a 80% prevent death from disease.

The study makes Chile one of the few countries to use its mass vaccination program (started in February) to provide information on vaccines apart from clinical tests.

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Efficacy is the protection offered by a vaccine in real conditions, unlike the efficacy evaluated in clinical studies.

“Two weeks after the first dose, we see an effect significantly less than the second dose but it is also going in a positive direction, ”said Araos.

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Chile has applied almost 13 million vaccines, with 7.6 million people having received a first dose, while more than 5 million, 33 to 34% of the susceptible population, have already fulfilled both requests.

90.1% of people vaccinated received CoronaVac, while the others got the pfizer vaccine.

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Over the weekend, the Chilean authorities had already come forward to defend the use of Sinovac in the midst of doubts about his efficiency.

Chile has also signed supply agreements with pharmaceutical companies Johnson & johnson alreadystraZeneca, but deliveries have yet to materialize due to supply bottlenecks.