Researchers around the world are racing to develop a vaccine against Covid-19, with more than 170 candidate vaccines now tracked by the World Health Organization (WHO).
Vaccines normally require years of testing and additional time to produce at scale, but scientists are hoping to develop a coronavirus vaccine within 12 to 18 months.
Vaccines mimic the virus – or part of the virus – they protect against, stimulating the immune system to develop antibodies. They must follow higher safety standards than other drugs because they are given to millions of healthy people
No vaccine has yet passed final, large-scale trials to prove it is safe and effective enough to protect people from contracting the virus that has led to almost 800,000 deaths worldwide.
The aim is to boost the immunity of specific groups of people, including medical workers and those who work at food markets and in the transportation and service sectors
South Africa will launch clinical trials of a US-developed coronavirus vaccine with 2,900 volunteers this week, the second such study in the African country worst hit by the disease, lead investigator Shabir Madhi said Tuesday.
Known as NVX-CoV2373, the vaccine was developed by US biotech company Novavax from the genetic sequence of SARS-CoV-2, the virus that causes the COVID-19 disease.
Many other countries are also working hard on the vaccine and clinical trials to make sure the vaccine gets approved
The Oxford vaccine produced an immune response in its first human trials, underlining its position as one of the leading candidates in the race to combat a virus that has led to hundreds of thousands of deaths and crippled the global economy
Oxford said that if all does well and all the clinical trials are done in time, the Corona virus vaccine could be ready by the end of this year
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