Pfizer, Moderna Covid-19 Vaccines Work In Real-World Conditions: US CDC

More than 12 percent received just a single dose of the vaccine and more than 62 percent, had received both doses of either a Pfizer or Moderna Covid-19 vaccine.

According to a new report from the US Centers for Disease Control and Prevention, the Pfizer and Moderna Covid-19 vaccines have been reported to provide highly effective protection under real-world conditions.

At full vaccination, the vaccines were 90 per cent effective at preventing infections, including those that had no symptoms, reported CNN.

According to the agency’s Morbidity and Mortality Weekly Report published Monday, at a single dose of vaccination they were 80 percent protective.

The vaccines protected nearly 4,000 healthcare workers and first responders, the study found. The volunteers for the study worked in eight locations around the country and had been observed from mid-December to mid-March.

Regardless of symptoms, the US disease agency tested volunteers regularly. Meanwhile, the CDC also monitored the volunteers through text messages, e-mails, and direct medical reports, and nasal swab tests once a week were done of the volunteers.

More than 12 percent received just a single dose of the vaccine and more than 62 percent, had received both doses of either a Pfizer or Moderna Covid-19 vaccine.

A total of 205 had a positive PCR test for Covid-19 that was more than 87 percent of those cases had symptoms and among 2,961 people vaccinated with one or more doses and the 989 unvaccinated participants.

However, nearly 23 percent of the cases sought help from a doctor and there were two hospitalizations, but no deaths were reported so far.

This study is similar to scientists who saw in clinical trials for the vaccines but studies like this are important to show how effective the vaccines are, particularly in a population that, through their work, can encounter a large number of people who have Covid-19, CNN further reported.

“Reducing the risk for transmissible infection, which can occur among persons with asymptomatic infection or among persons several days before symptoms onset, is especially important among health care personnel, first responders, and other essential and frontline workers, given their potential to transmit the virus through frequent close contact with patients and the public,” the report read.

CDC Director Rochelle Walensky said in a statement, The Hill, “This study shows that our national vaccination efforts are working. The authorized mRNA Covid-19 vaccines provided early, substantial real-world protection against infection for our nation’s health care personnel, first responders, and other frontline essential workers.”

She added that these findings should offer hope to the millions of Americans receiving Covid-19 vaccines each day and to “those who will have the opportunity to roll up their sleeves and get vaccinated in the weeks ahead. The authorized vaccines are the key tool that will help bring an end to this devastating pandemic.”

Other recent studies of partial vaccination following the first dose of the Pfizer vaccine among health care providers were acknowledged by the CDC acknowledged and found that was consistent.

However, the studies conducted in the United Kingdom and Israel showed that one dose was about 70 per cent and 60 per cent effective against the virus.


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