If ultraviolet C (UVC) is said to kill the corona virus, then what about the role of utraviolet A (UVA) and ultraviolet B (UVB) rays? Does it have the same function?

So far, UVC rays are often used as disinfectants for objects prone to corona virus exposure. For example, money to vehicles such as buses, like in China.

Reported by Okezone from BBC Indonesia, UV light itself is in the sun, where someone is recommended to sunbathe every morning. Do you know? In developing countries, sunlight has been used to sterilize water, even recommended by the World Health Organization (WHO).

This technique is done by pouring water into a glass or clear plastic bottle, and leaving it in the sun for 6 hours. The method is thought to work well, because UVA in the sun reacts with dissolved oxygen, in order to produce unstable molecules, such as hydrogen peroxide. Namely the active ingredient in many household disinfectants, which can damage the pathogen.

Without water, sunlight will still help clean the surface. But it might take longer than you think.

The problem is we don’t know how long, because research on the new corona virus is too early.

While research on SARS found that exposing the virus to UVA for 15 minutes, did not affect the virus’s ability to infect. However, this study does not look at longer exposure, or UVB, which is known to be more damaging to genetic material.

Conversely, other viruses might provide some clues. In Brazil, researchers found that the number of flu cases tends to increase during the burning season. When there is more smoke in the atmosphere from forest fires, UV light will be disrupted.

Another study found that the longer the flu particle was exposed to sunlight, the more concentrated it would be and the less likely it would be to remain contagious. Unfortunately, the study looked at flu that floated in the air, instead of those that had dried up on objects.

No one knows how long it takes to deactivate COVID-19 with sunlight, or what strength is needed.

In addition, the amount of UV in the sun varies depending on the time, weather, season, and in the part of the hemisphere where you live. So, there won’t be a reliable way to kill the virus.

Finally, it goes without saying that UV will cause damage to your skin and increase the risk of skin cancer. Once the virus is in your body, the amount of UV that you get, will not have an impact on your body’s condition.

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