Viruses are in the air with flu and RSV on the rise

AS SOUTH Africans continue to experience the winter chill, the National Institute for Communicable Diseases (NICD) is urging people to stay informed, take precautions, and seek medical attention when necessary especially as seasonal viruses remain active across the country.

- TRACY-LYNN RUITERS

This comes as the 2025 influenza season in South Africa began four weeks earlier than in 2024, marking the earliest onset since 2010, according to pneumonia surveillance in public hospitals. Although transmission remains relatively low, the virus continues to circulate well into the winter months.

NICD has confirmed that flu cases remain active across the country. During the week of June 16-22, lab testing showed a positivity rate of 15.8% for influenza and 16.7% for Respiratory Syncytial Virus (RSV) - two of the most common respiratory viruses tracked during this time of year.

RSV, which typically peaks in autumn, has shown a later-than-usual surge in 2025, with ongoing detection reported in national respiratory surveillance. It remains a particular concern for young children, the elderly, and those with weakened immune systems.

Other viruses like SARS-CoV-2 the virus responsible for Covid-19 continue to be monitored, but are circulating at low levels. The NICD is also keeping a watchful eye on diseases like measles and rubella, though these are currently less widespread.

The NICD reminds the public to stay alert for symptoms such as fever, cough, sore throat, shortness of breath, and muscle aches all common to flu and RSV.

Covid-19 shares many of these symptoms but may also include the loss of smell or taste.