Haemophilia is a tier 2 symptom. It causes a reduction in the ability of the blood to clot. The pathogen can be spread through infected blood. Symptom Combos Evolving this alongside the tier 3 symptom Skin Lesions unlocks the Profuse Bleeding symptom combo, which unlocks the Red Rain achievement. Retrieved from "https://plagueinc.fandom.com/wiki/Haemophilia?oldid=61375" Categories: Symptoms Languages: Português do Brasil Community content is available under CC-BY-SA unless otherwise noted.