Does wearing masks reduce COVID-19 transmission probability to 1.5%? Here’s the truth

An infographic has been doing the rounds on social media stating that the transmission probability of Coronavirus could reduce from 70% to 1.5% if the COVID-19 carrier and a healthy person are both wearing masks.


We fact-checked the above information and found it to be unsubstantiated and false.

To begin with, the infographic does not mention the source of this information.

We then checked the WHO website for recommendations on wearing a mask and found that a healthy person is only advised to wear a mask if they are taking care of a COVID-19 affected patient.

On further research, we came across a study by, which is a premier internal medicine journal established in 1927 by the American College of Physicians (ACP).

The study, which examines the transmission of COVID-19, states: In conclusion, both surgical and cotton masks seem to be ineffective in preventing the dissemination of SARS–CoV-2 from the coughs of patients with COVID-19 to the environment and external mask surface.

Hence, the infographic remains unsubstantiated and although authorities globally have encouraged wearing masks while stepping out during the pandemic, there is no scientific evidence that it will reduce the transmission rate to 1.5%.

Thus, from the above information, we can conclude that the post is misleading.

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