Johnson & Johnson Says COVID-19 Vaccine is Only 66% Effective

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If Johnson & Johnson is going to be the latest company to distribute a COVID-19 vaccine, they have a lot of work to do.

On Friday, the company announced that its COVID vaccine is only 66 percent effective through clinical trials.

Johnson & Johnson uses a one-shot vaccine rather than two shots like other leading vaccines. The good news, despite its overall effectiveness, is that the vaccine was 85 percent effective in preventing severe cases that lead to hospitalization or death.

“In a pandemic, if you can, with a single-dose vaccine, very quickly eliminate the severe consequences of death, hospitalization, and severe disease, that’s what’s important for society,” Paul Stoffels, Johnson & Johnson’s chief scientific officer, told Stat News.

Currently, Moderna and Pfizer/BioNTech have the most effective vaccines on the market and they have begun being distributed.

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The coronavirus mainly comes from animals and a majority of those who were infected early either worked at or frequently visited the Huanan seafood wholesale market in Wuhan, according to The Guardian. The virus is similar to Severe acute respiratory syndrome (Sars) and Middle Eastern respiratory syndrome (Mers).

The Wuhan coronavirus is transmitted from person to person through “droplet transmission.” That means an infected person can pass the virus by sneezing or coughing on another person as well as by direct contact.

While a majority of the cases have been detected in the United States and China — with more than 25.3 million confirmed cases and 421,000 deaths in the United States — it has now reached many countries around the world. It has also been confirmed in Italy, Australia, Canada, France, Germany, and many other eastern countries.

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