Table 1.
Environmental | Behavioural | Nutritional | Systemic |
---|---|---|---|
|
|
|
|
URTI, upper respiratory tract infection.
This article is being made freely available through PubMed Central as part of the COVID-19 public health emergency response. It can be used for unrestricted research re-use and analysis in any form or by any means with acknowledgement of the original source, for the duration of the public health emergency.