Studies show that a specific virus has been found in 49 different animal species, including crabs and shellfish, according to WP Tech.
It has been detected in Asia, Europe, Africa, and the Americas.
This means the virus is not confined to a single location. Researchers are therefore now investigating whether it can also affect humans.
Mysterious disease
In China, doctors have for several years observed a growing number of cases of an eye disease. It causes inflammation and very high pressure in the eye. In severe cases, patients may lose their vision.
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It has been difficult to identify the cause, as patients tested negative for known viruses that typically cause eye problems.
However, according to a study published in Nature Microbiology, researchers found small virus-like particles in tissue samples from 70 patients. These particles were not found in healthy individuals.
Raw fish and shellfish
Several studies show that the virus is almost identical to one found in marine animals.
Experiments on cells and animals also indicate that it can cause the same symptoms observed in patients.
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Interviews with patients further reveal that many had contact with raw fish and shellfish.
Researchers therefore believe there is a link between the virus and the eye disease.
This is the first time a virus from an aquatic environment has been linked to a disease in humans. There is currently no treatment, but symptoms can be alleviated.
Sources: WP Tech and Nature Microbiology.
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