The research found that children who tested positive for COVID-19 were at no greater risk of being diagnosed with asthma over the next 18 months compared to children who tested negative.
Researchers in Australia say their evidence points to the possibility that this knowledge was "suppressed" and was kept from the public during the pandemic.
Either low or high concentrations of salt in warm water for 2 weeks after a positive COVID test were up to 3 times less likely to require hospital care.