By Tony Winterburn • 15 July 2020 • 10:03
40.3 per cent of Spaniards refuse to be vaccinated immediately
More than half the participants had side effects, including fatigue, chills, headaches, muscle aches, and pain at the injection site. Some had a fever. One person who received the low dose developed hives and was withdrawn from the study. None of the side effects was considered serious however.
Researchers around the world are racing to develop a vaccine against Covid-19, with more than 140 candidate vaccines now tracked by the World Health Organisation (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 – hence the delay.
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