Two doses, not One for each person, if COVID19 vaccine came

This demand will cause a real problem globally

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Monitoring Desk:

When a coronavirus comes on the market, people would likely need two doses, not one. This will cause a real problem across the globe since its delivery will be another challenge for States and institutions.

Difficulties procuring test kits and protective gear throughout the pandemic point to supply chain issues that could also plague distributing double doses of vaccines for an entire country.
Other potential concerns are more human. Convincing people to show up to get a vaccine not once, but twice, could be a formidable undertaking.

Two doses not One for each person, if COVID19 vaccine came

Two doses for each person 
“There’s no question that this is going to be the most complicated, largest vaccination program in human history, and that’s going to take a level of effort, a level of sophistication, that we’ve never tried before,” said Dr. Kelly Moore, a health policy professor at Vanderbilt University.
So far, Operation Warp Speed, the federal government’s effort to get a vaccine on the market, has given money to six pharmaceutical companies.
Two of those companies, Moderna and Pfizer, are now in Phase 3, large-scale clinical trials. The 30,000 volunteers in each of the trials are getting two doses, with Moderna spacing their shots out 28 days apart and Pfizer spacing theirs out by 21 days.
Two doses not One for each person, if COVID19 vaccine came
AstraZeneca is expected to start Phase 3 trials this month. Their Phase 1 and Phase 2 trials used two doses given 28 days apart.
Novavax also has yet to begin Phase 3 trials but used two doses in their earlier trials.
In Johnson & Johnson’s upcoming Phase 3 trials, some participants will take one dose and others will take two doses.
Sanofi hasn’t made announcements about whether their vaccine will be in one or two doses.
It’s not surprising that the coronavirus vaccine will likely need two doses. Many vaccines — including childhood vaccines for chickenpox and Hepatitis A and an adult vaccine for shingles — require two doses.
Courtesy: cnn.com

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