While our understanding of the new respiratory disease has steadily increased since it was first detected in China last year, what lies ahead over the next half-year remains unknown.In Europe, where strict lockdowns ended before the economy-boosting summer holiday season, the reopening of schools and offices has been clouded by rising infection rates, notably in Spain, France and Britain.
England's deputy chief medical officer, Jonathan Van-Tam, said people let their guard down over the summer in the fight against the virus. Still haunted by the first wave, many doctors fear that hospitals and intensive care units may end up being overwhelmed in the coming months, as they were in the spring.A handful of recent studies have profiled people reinfected with the virus having recovered from an earlier bout of Covid-19.
He had no symptoms the second time around -- which some experts have hailed as a hopeful sign that his immune system had learned to defend itself against the respiratory disease. However, many experts say a distinction should be drawn between young children and adolescents, who appear just as contagious as adults.Much is riding on the development of an effective, safe vaccine, and this week the WHO listed 35 vaccine candidates going through clinical trials on humans around the world.
Story continuesThe European Medicines Agency has said a vaccine may not be ready until early next year, while the WHO has said it could take until mid-2021 to reach widespread immunisation.In many places, face coverings went from being seen as unnecessary to a mandatory accessory -- a rapid about-face that left many reeling.
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