COVID-19 is transmitted through droplets when one coughs or sneezes.
The latest biological findings on SARS-Cov-2 viral entry into human tissue and sneeze/cough-droplet ballistics suggest that the major transmission mechanism is via large droplets and not fine aerosols.
These large droplets can be effectively blocked by any barrier in front of the mouth :
Home Made Masks
N95 Respirators (good at blocking fine aerosols too)
Evidence suggests COVID-19 could be transmitted before symptom onset, community transmission might be reduced if everyone, including people who have been infected but are asymptomatic and contagious, wear[s] face masks.
It is reported that 80% of all COVID-19 cases are asymptomatic in nature. India is stepping into the community transmission phase. It is prudent to take no risk and enforce the public to cover their mouths while in public/home to avoid transmission.
We understand that mandating the public to wear ‘masks’ might lead to the unavailability of surgical masks and N95 respirators. We need to make it clear to the public that homemade masks are effective enough if they are in a low-risk area.
This will prevent asymptomatic individuals from affecting others through droplets.