In recent months, health officials in China have raised concerns over a notable rise in cases of human metapneumovirus (hMPV), a respiratory virus that is becoming an increasingly significant threat to public health. Although hMPV is not as well-known as influenza or COVID-19, its rising incidence in the country has prompted alarm, especially given the virus’s potential to spread quickly and cause severe illness in vulnerable populations.
This virus is not new and has been present for the past 60 years. It has a worldwide distribution. Transmission is likely to occur by direct or close contact with contaminated secretions, which may involve large particle aerosols and droplets.
Physical separation at distances of more than 2 meters, therefore, interrupts aerosol transmission. Transmission amongst hospitalised children and adults in care homes has also been reported. The time it takes for an infection to develop after exposure to this virus is not well defined, but it’s thought to be 5 to 10 days in most cases.
hMPV commonly affects children and predominantly presents with flu-like and upper respiratory tract infection symptoms. Some of the symptoms include cough, fever, rhinitis, and wheezing.
While the rising cases are certainly concerning, there is no immediate evidence to suggest that hMPV is on the brink of causing a pandemic similar to what we saw with COVID-19. Several factors point to hMPV remaining a localized or regional threat rather than a global one. These factors include the following; HMPV has been circulating for years without evolving into a pandemic-level threat. It is not a new virus. While it can cause severe illness in vulnerable populations, for the vast majority of individuals, HMPV infections are mild and self-limiting, hence it’s less likely for it to cause a pandemic.
And last but not least, unlike highly contagious viruses like SARS-CoV-2, HMPV does not exhibit the same level of rapid global transmission. Its spread is more typical of seasonal respiratory viruses
Even though the hMPV pandemic is remote, the virus can cause serious disease in some people, and unpleasant symptoms in many others. With no vaccine available to prevent hMPV or specific antiviral drug to treat it, the best strategy is to try and avoid catching it. Since the virus is thought to spread through coughing and sneezing, or touching objects, surfaces, or hands that have viruses on them, the risk of catching or transmitting it can be reduced by taking similar precautions to those that prevent the spread of other respiratory pathogens, such as influenza.
This means staying home if you have symptoms, wearing a mask in crowded or poorly ventilated spaces, covering coughs and sneezes with a tissue or bent elbow, and regularly washing hands with soap and water.
