Missouri hairstylists, who potentially exposed 140 people to coronavirus, did not infect any

Two hairstylists in Missouri, US who worked while they had already contracted coronavirus did not infect the 140 clients they served even though they had symptoms at the time.

Both stylists worked at the same Great Clips location in Springfield for more than a week in mid-May.

Studies have found that physical distancing and the use of a mask are the two best ways to prevent coronavirus transmission -- both of which were duly followed at the salon.

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Health officials say the clients and the stylists all wore face coverings, and the salon had set up other measures such as social distancing of chairs and staggered appointments.

Of the 140 clients and seven co-workers potentially exposed, 46 took tests that came back negative. All the others were quarantined for the duration of the coronavirus incubation period. The 14-day incubation period has now passed with no new infections linked to the salon.

Officials added they're looking into the case for insight on how to stop the spread and help with efforts on future research.

Talking of the stylists, one of them had worked with 56 clients at the salon while the second one had seen 84 customers and seven coworkers. They went to the salon for about eight days ending on May 20.

The salon kept impeccable records that made contact tracing possible.

More than 1,12,000 people have died from coronavirus in the United States, where the number of confirmed cases is more than 2 million. In Missouri, the virus has killed more than 850 people and infected over 15,000 others.