The Lambda variant accounts for almost all new cases in Peru, which has the world’s highest COVID death toll per capita.
Preliminary evidence suggests Lambda has an easier time infecting our cells and is a bit better at dodging our immune systems. But vaccines should still do a good job against it.
Britain is ‘opening up’ after months of COVID-19 restrictions. But it could also be opening itself up to court action for breaching international human rights laws.
Some deaths among the vaccinated are to be expected given how high the threat of COVID-19 is to older people.
Infection from the coronavirus can produce weaker immunity than vaccination.
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COVID-19 vaccination produces a more consistent immune response than a past infection. With the delta variant, the difference in protection may be even greater.
New Zealand’s chief science advisor Dame Juliet Gerrard receiving her first vaccination dose.
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New Zealand will have to vaccinate 80-85% to reach population immunity. Until then, a blanket border re-opening, even if only for vaccinated people, would pose a high risk of new outbreaks.
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New Zealand health authorities were quick to react to the threat of a COVID-19 outbreak and managed to avoid community transmission, but the unique nature of how the virus spreads also played a role.
Federal officials have repeatedly touted Canada’s border measures during COVID-19 as among the most stringent in the world.
THE CANADIAN PRESS/Ryan Remiorz
Pressure is mounting to reopen the Canada-U.S. border, but there are risks. How well those risks are managed may be the difference between pandemic recovery or a fourth wave of COVID-19.
The government needs to vaccinate as many South Africans as possible.
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South Africa didn’t engage early enough with pharmaceutical companies in bilateral discussions to ensure it could get vaccines early.
The emergence of variants of concern in late 2020 marked a shift in the COVID-19 pandemic.
The Delta variant: What it is, where it came from, why it’s different and whether COVID-19 vaccines can prevent it.
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We recently heard reports of a new and dangerous ‘hybrid’ variant circulating in Vietnam. There is such as a thing as a hybrid viral variant — but this doesn’t appear to be it.
The level of immunity needed — either through vaccination or infection — for practical herd immunity is uncertain, but may be quite high.
It is unlikely that we will reach full herd immunity for COVID-19. However, we are likely to reach a practical kind of herd immunity through vaccination.
The prevention of future pandemics requires examining viral family trees.
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Bat hosts, lab leaks – tracing SARS-CoV-2 to its origins involves more than just tracking down patient zero.
Both the AstraZeneca and Pfizer vaccines still work relatively well against it — though only after the second dose.
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The World Health Organization has created more memorable and less stigmatising names for coronavirus variants.
The COVID-19 variant responsible for Victoria’s latest outbreak is one of three Indian variant sub-types, which spreads more easily than the original strain. Here’s what we know so far.
This giant effigy of the SARS-CoV-2 coronavirus is intended to be burned as part of the Holika Dahan, during which the demon Holika is led to the stake on the eve of the Holi celebrations, a popular Hindu festival.
One of the main fears regarding new SARS-CoV-2 variants is that they might be resistant to immunity granted by vaccines, including RNA vaccines.
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Variants of interest and variants of concern seem to be popping up at an alarming rate. But how many of them do we really need to worry about?
Houses in the city of Victoria, the capital of Seychelles.
What does the Seychelles experience tell us about variants, vaccine efficacy and herd immunity?
A woman reacts as a health worker tries to take her swab sample to test for COVID-19 in Jammu, India.
(AP Photo/Channi Anand)
As the Indian variant becomes more prevalent within our borders, anti-South Asian sentiment is also growing, putting the community at a higher risk of hate crimes.
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A viral immunologist answers key questions about the B16172 variant.