Higher humidity 'fights flu'

Raising the level of humidity of indoor public spaces could help to reduce the spread of influenza, research suggests.

Raising the humidity of public spaces could prevent flu virus particles (pictured) from spreading (Photo: SPL)

A US study found that flu virus particles, released by a simulated 'cough', were far less capable of infecting cells at 43% humidity than at 23%.

At the lower humidity around 77% of cells were re-infected, compared with just 14% at the higher humidity.

Researchers said maintaining humidity above 40% could greatly reduce how easily the virus spreads between people in public spaces.

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