The vaccine is made by the National Institutes of Health and Moderna Inc.
New data from a study conducted in the United Kingdom show that AstraZeneca's vaccine offers effective protection against the Delta variant of the Covid-19 virus, also known as the B.1.617.2 strain that was first detected in India, the company said yesterday.
The data suggest that vaccine effectiveness against milder symptomatic disease, although significant, was lower.
Mass vaccination sites may be gone in Milwaukee, but the city continues to work with partners at several vaccine clinics, including one at Helfaer Field where people who get their shot on-site also get two free Brewers tickets.
While the former was found 96 per cent effective against the Delta variants, the later is 92 per cent effective after two doses.
"This real world evidence shows that Covid-19 Vaccine AstraZeneca provides a high level of protection against the Delta variant, which is now a critical area of concern given its rapid transmission", Mene Pangalos, the executive vice president of AstraZeneca's BioPharmaceuticals R&D, said in a statement.
Public Health England in its briefing said that the 28-day case fatality rate for Delta is 0.1 per cent although there is a vast majority of cases within the 28 days of follow-up required. The risk of hospitalisation is more or less double than then in Alpha variant, the study further asserted.
"The data wasn't entirely clear to me of how many people were vaccinated in the actual symptom group", Craig Jenne, infectious disease researcher and Canada Research Chair at the University of Calgary, told CTVNews.ca in an interview. "Yes, that could be the variant that's causing it, but it may just be also related to their age". It is to be noted that the Alpha variant is already 50 per cent more transmissible than the original strain of the coronavirus.
"It is now much more likely than six months ago that unvaccinated people can get infected with the virus, and if they get infected with the virus, it's four times more likely than before that they end up in hospital", Juni said.
The study, published on Monday, analyzed the medical records of 14,000 people who had become infected with the Delta variant between April 12 and June 4.
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