Human parainfluenza viruses (HPIVs) have been rising in China in recent weeks, with children aged five and under experiencing the highest infection rates, according to data from the Chinese Centre for Disease Control and Prevention.
- The HPIV positivity rate among influenza-like illnesses reached 6.9% for the week beginning April 6.
- Children under five are more susceptible to HPIVs than other age groups.
- Typical symptoms include barking coughs or hoarse voices, distinguishing them from influenza.
Rising Trends of Human Parainfluenza Viruses
Data indicates a steady increase in positivity rates for HPIVs. For the week starting April 6, the rate stood at 6.9%, an increase from 6.5% the previous week and 4.7% in mid-March.
While the China CDC noted that overall influenza activity is declining, HPIVs, rhinovirus, and respiratory syncytial virus continue to circulate.
Experts from the China CDC stated that HPIVs are less prone to mutation than influenza and are more likely to affect infants and young children.
To differentiate the two, experts noted that a barking cough or hoarse voice often suggests HPIVs. In contrast, sudden high fever and body aches across any age group are more closely associated with influenza.
The viruses are spread through close contact and respiratory droplets. Health officials advise the public to maintain hand hygiene, wear masks, and ensure proper ventilation to prevent the spread of the virus.
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