If the risk of cancer wasn’t enough to put you off UV tanning salons, an expert has now warned that the beds can host bacteria and viruses, including herpes.

Sexually transmitted infections can be passed from person to person through unprotected sex and genital contact, and herpes can also spread to parts of the body where there is a cut or break in the skin, according to the Herpes Association.

Dermatologist Dawn Marie Davis, MD, an associate professor of dermatology and pediatrics at the Mayo Clinic, told Yahoo Health that bacteria and viruses can be found alive on sun beds, despite the heat.

She explained that bacterium which lives on the skin is transferred on to the bed, which is then heated – but not enough to sterilise the surface.

“Then it [the bacterium] becomes stronger and hardier,” Davis said.

“Then if you sweat, that only adds to the bacteria or virus’s ability to grow, and then if you have a nick or cut in your skin, which is very common, then you’re much more likely to acquire the infection,” she added.

The staphylococcus bacteria, which can be life-threatening, faecal bacteria, the herpes virus, and papillomavirus, which causes warts, are all able to survive on a tanning bed.

Davis said the best way to avoid such infections is to stop using sun beds, and opt for spray tans instead.

According to Cancer Research UK, the use of UV sun beds significantly increases the risk of developing malignant melanoma, while the World Health Organization has warned that “UV radiation plays an important role in the development of skin cancer, cataracts, and other eye conditions, and suppresses the immune system.”