COVID-19 Measures Slash Flu and RSV Cases Worldwide
The COVID-19 pandemic has had an unexpected impact on the spread of other respiratory viruses. Cases of flu and respiratory syncytial virus (RSV) have plummeted worldwide, with similar reductions noted in the southern hemisphere. A study by Siri Sarvepalli and colleagues at Wayne State University has analysed the effects of the pandemic on the incidence of influenza and other respiratory infections.
During the 2020-2021 season, there were no positive tests for influenza A, B, or RSV in adults. In children, only one case of RSV was detected, with no cases of influenza A or B. This dramatic decrease was observed across various regions, including North America, Europe, South America, and Australia and New Zealand. The comprehensive measures taken to control the COVID-19 pandemic, such as mask-wearing, social distancing, and lockdowns, have been credited with this reduction. Infection with COVID-19 may also have provided temporary protection against other respiratory viruses through a phenomenon known as viral interference.
Experts believe that community mitigating measures, such as handwashing and continued use of masks, could potentially keep the numbers of these infections lower than usual in the coming years. However, as SARS-CoV-2 becomes a seasonal virus, cases of flu and other respiratory infections are expected to rise back to normal levels.
The COVID-19 pandemic has led to a significant decrease in flu and other respiratory virus cases worldwide. While these measures have been effective, it is crucial to remain vigilant as we move forward. As SARS-CoV-2 becomes a seasonal virus, we can expect a return to normal levels of these infections. Continued vigilance and adherence to public health guidelines will be key in managing future outbreaks.
