The World Health Organisation’s Europe unit is reporting that about one in 10 people who contracted COVID-19 continue to show persistent ill health 12 weeks after infection.
Dr Hans Kluge, the head of WHO Europe, says much about so-called long COVID remains unknown, but the burden is real, and it is significant.
In a policy brief released on Thursday, WHO Europe urged policymakers to do more to acknowledge and treat long COVID, which can bring severe fatigue, chest pain, heart inflammation, headache, forgetfulness, depression, loss of smell, recurrent fever, diarrhea and ringing in the ears.
It said available data showed that about one in four people with COVID-19 show symptoms about a month after testing positive, while one in 10 experience symptoms after 12 weeks.
Kluge told reporters that the coronavirus is still spreading at very high rates across the 53-country European region, citing two variants of concern.
Frequently Asked Questions
A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.
There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.
Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.