Cotton mask is not PPE ! Evidence from the Grade 10 Science Project of Hannah Altura & Khrysza Paras, pictures below show agar plate with cut pieces of N95, N90, dust mask, surgical mask and cotton mask. A drop of saliva is still visible after 24 hours in ALL masks EXCEPT the cotton mask. Saliva penetrated the cotton mask allowing bacteria to grow underneath and around the black cotton mask.
The best control measure is still elimination of risk (home quarantine to prevent exposure). The public should follow the DOH /WHO advice:
https://www.doh.gov.ph/2019-nCov/FAQs
1. Home quarantine, stay at home
2. Practice frequent and proper handwashing
3. Practice proper cough etiquette
4. Social distancing, maintain at least 1 meter distance from another person
5. Maintain healthy lifestyle, drink plenty of water/liquids, enough sleep, exercise
Nice and useful information for all...I hope this article is helpful for us