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#World Health Organization

Extreme drought has increased by nearly a third over the last 50 years, according to a report by The Lancet Countdown. Photo: Asaad Niazi /
Extreme drought has increased by nearly ... […]

‘Threat multiplier’: How climate change affects health

Deadlier than Covid, or even rivalling cancer? Researchers have been increasingly attempting to calculate the effect climate change will have on health if the world does not act quickly to reduce carbon emissions.
Europe's medicines watchdog has approved a Covid jab by Novavax, which uses a more conventional technology that the biotech firm hopes will reduce vaccine hesitancy. Photo: Justin Tallis / AFP
Europe's medicines watchdog has approved... […]

The technology behind Covid jabs

How do the different vaccines work against Covid-19? The WHO has authorised the use of Novavax's Nuvaxovid, a subunit vaccine that contains a purified piece of the virus to trigger an immune response
A healthcare worker gives the Johnson and Johnson Covid vaccine to a woman outside a polling station in Laudium, Pretoria, on November 1, 2021. Photo: Phil Magakoe / AFP
A healthcare worker gives the Johnson an... […]

Did vaccine inequality lead to the Omicron variant?

In October 2020, as scientists raced to develop a Covid shot, the head of the WHO warned against looming "vaccine nationalism". But is vaccine inequality the reason behind Omicron's emergence?