COVID-19: The role of next-generation vaccines in immunity

Indications are that the virus that causes COVID-19 is going to continue evolving and escaping the protection against infection people already have. Researchers are working on next-generation vaccines tailored to fight off specific versions of the virus, like the Omicron sub-lineages BA.4 and BA.5. But can these new vaccines be tested and produced fast enough to keep up with the rapidly changing virus? Aisha Abdool Karim asked some local experts.

Read More

We need to vaccinate 90% of over-35s – Madhi

Government can avoid the overwhelming of health services and minimise death in an anticipated fourth COVID-19 wave in November/December by getting 90% of people in South Africa over 35 years old vaccinated before then. Life could then return to normal by Christmas, even with ongoing SARS-CoV-2 circulation, contends vaccinologist Professor Shabir Madhi.

Read More

COVID-19 in kids: What have we learnt one year later?

It has been over a year since the world saw the first confirmed case of COVID-19, yet the science behind the virus’ physical impact on children remains relatively unclear. Kathryn Cleary spoke to two experts in paediatrics and immunology to get an update on what we have learnt so far.

Read More

COVID-19: The evolving science behind long-COVID

A study published in the Lancet medical journal confirms that the health effects of COVID-19 can linger months after someone has ‘recovered’. Kathryn Cleary asked local experts about the underlying science and whether the South African public healthcare system is ready for so-called long-COVID.

Read More

Herd (Immunity) Today, Gone Tomorrow

There is much talk in South Africa about a ‘second wave’ of COVID-19. In Europe, it is much more than talk, with COVID-19 diagnoses, hospital admissions, and deaths, not to mention ‘restrictions’, all on the rise. Alex Welte places in perspective what we do and do not know about herd immunity and potential second waves.

Read More