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Articles on Delta variant

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A bad flu year on top of the pandemic could mean trouble for already-stressed hospitals. George Clerk/E+ Collection via Getty Images

Flu season paired with COVID-19 presents the threat of a ‘twindemic,’ making the need for vaccination all the more urgent

Recent computer modeling shows the upcoming flu season might see a surge in cases. Coupled with COVID-19’s continued threat, doctors are again urging Americans to get their shots.
Public health officials have been waiting for good data before making any decisions about booster shots for people who received Johnson & Johnson’s Janssen COVID-19 vaccine. AP Photo/Mary Altaffer

New Johnson & Johnson data shows second shot boosts antibodies and protection against COVID-19 – but one dose is still strong against delta variant

Your body produces antibodies after an infection or vaccine, but these slowly decline over time. New Johnson & Johnson data sheds light on the duration of protection and the need for booster shots.
People who fled the war in Tigray gather around in a temporarily built internally displaced people. Amanuel Sileshi/AFP via Getty Images

How conflict has made COVID-19 a neglected epidemic in Ethiopia

The biggest challenge to the health system is the war in Tigray and other insecurity all over the country. Conflict has made COVID-19 prevention and vaccination efforts impossible in many areas.
Arriving travellers from an international flight follow signs toward COVID-19 testing at Pearson International Airport in Toronto in February. THE CANADIAN PRESS/Nathan Denette

​​COVID-19 and border restrictions: Here’s what the parties’ election platforms say about controlling the fourth wave

The federal election is taking place during a fourth wave of COVID-19, and border management remains crucial to controlling the pandemic. Here’s how each major party would manage travel restrictions.
The huge number of active coronavirus infections offers plenty of opportunity for mutations to occur and new variants to arise. Eoneren/E+ via Getty Images

Massive numbers of new COVID–19 infections, not vaccines, are the main driver of new coronavirus variants

When the coronavirus copies itself, there is a chance its RNA will mutate. But new variants must jump from one host to another, and the more infections there are, the better chance this will happen.
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South African health experts have identified a new lineage of SARS-CoV-2: what’s known so far

We are being cautious about the implications for vaccine efficacy and transmissibility while we gather more data to understand this lineage.
To reduce the spread of COVID-19 in unvaccinated children, epidemiologists rely on a layered approach of interventions including masking, ventilation, cohorting and promoting vaccination for all eligible community members. (AP Photo/Chris O'Meara, File)

Back-to-school FAQs on children’s health & COVID-19: Delta variant, preventing infection, testing and international examples

With no vaccination yet in children under 12, preventing COVID-19 spread in schools depends on fine-tuning policy interventions according to local epidemiology and vaccination rates.

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