If you love cats but are allergic to them, a team of scientists in Switzerland could have the purrfect solution for you. HypoPet AG, a Swiss-based company, announced it has developed a vaccine called HypoCat that works by “immunizing cats against their own major allergen, Fel d 1,” found in cat dander to which 10 percent of humans are allergic, according to the Journal of Allergy and Clinical Immunology. HypoPet hopes to have the vaccine on the market in the United States soon.