By Martin Beckford, Telegraph
Researchers are developing a vaccine that provides long-term protection against the itching, sneezing and watering eyes that cats cause in up to one in 10 people.
Early trials suggest the product is safe, effective and lasts longer than current treatments, which can also have serious side-effects.
If further tests are successful, the scientists behind the vaccine hope they will be able to develop similar products for the millions who suffer hay fever and other allergies, although experts warn this will be far more difficult to achieve.
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