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Covid-19: Why a fast-spreading virus and a half-vaccinated public are a recipe for disaster

The unvaccinated are at risk as evolution accelerates the covid-19 pandemic


F
OR MUCH of 2020 the covid-19 virus was, in genetic terms, a little dull. Early in the pandemic a version of
SARS-
Co
V-2 that was slightly different from the one originally sequenced in Wuhan, and spread a bit better, came to dominate the picture outside China. But after that it was just a case of a letter or two of genetic code changing here and there. Sometimes such mutations proved useful for working out where infections were coming from. But none of them seemed biologically relevant. By September Salim Abdool Karim, a South African epidemiologist, was beginning to find his monthly updates on new mutations “quite boring”. He considered dispensing with them altogether. ....

United States , United Kingdom , South Africa , South Korea , South African , Tyler Starr , Africa Delta , Adam Kucharski , Jackson Turner , September Salim Abdool Karim , Ravindra Gupta , Bing Chen , Cambridge University , London School Of Hygiene , Fred Hutchinson Cancer Research Centre In Seattle , Washington University School Of Medicine , November Dr Karim , London School , Saharan Africa Delta , Fred Hutchinson Cancer Research Centre , Jesse Bloom , Washington University School , ஒன்றுபட்டது மாநிலங்களில் , ஒன்றுபட்டது கிஂக்டம் , தெற்கு கொரியா , டைலர் நட்சத்திரம் ,

Why even with vaccines, COVID-19 will always be with us


Washington: The road to eliminating COVID-19 is long and paved with uncertainty. Many countries are counting on vaccines to build sufficient immunity in their populations so that SARS-CoV-2 isn’t able to find susceptible people to infect, causing transmission of the coronavirus to slow and eventually stop.
But even with the rollout of highly effective vaccines, immunisation coverage may not reach that level - the so-called herd immunity threshold - anytime soon. For one thing, it’s not known what level of immunity is required. There’s also the threat of emerging coronavirus variants that may weaken the effectiveness of immunisations. ....

New Zealand , United Kingdom , United States , South Africa , South African , Mike Ryan , Helen Petousis Harris , David Heymann , Fred Hutchinson Cancer Research Centre In Seattle , Technical Advisory Group For Infectious Hazards , World Health Organisation , India Covid , New Delhi , Image Credit , Technical Advisory Group , Infectious Hazards , Fred Hutchinson Cancer Research Centre , புதியது ஜீலாந்து , ஒன்றுபட்டது கிஂக்டம் , ஒன்றுபட்டது மாநிலங்களில் , மைக் ரியான் , டேவிட் ஹேமான் , ஃப்ரெட் ஹட்சின்சன் புற்றுநோய் ஆராய்ச்சி மையம் இல் சீட்டில் , உலகம் ஆரோக்கியம் ஆர்கநைஸேஶந் , புதியது டெல்ஹி , படம் கடன் ,