We regularly screen patients for a number of tick and mosquito-borne diseases including heartworm, lyme disease, ehrlichia, and anaplasmosis using a blood test that assesses exposure. Treatment and prognosis varies based on each disease, but generally the earlier a disease is found, the easier it is to treat. We recommend yearly testing to screen for these pathogens to ensure your pet is not infected and does not have a pathogen affecting his or her health.