Legionnaires' disease diagnosed with the disease and five of them dying from it. In Quincy, Illinois, at the Illinois Veterans home, a 2015 outbreak of the disease killed 12 people and sickened more than 50 others. It was believed to be caused by infected water supply. Three more cases have been identified as of November 2017. In the fall of 2017, 22 cases were reported in a Legionnaires' disease outbreak in Anaheim, CA's Disneyland theme park. It was believed to have been caused by a cooling tower that releases mist for the comfort of visitors. The contaminated droplets likely spread to the
Marek's disease disease is Avian Viral Oncogenesis group (led by Professor Venugopal Nair OBE) at The Pirbright Institute, UK . Vaccination is the only known method to prevent the development of tumors when chickens are infected with the virus. However, administration of vaccines does not prevent transmission of the virus, i.e., the vaccine is not sterilizing. However, it does reduce the amount of virus shed in the dander, hence reduces horizontal spread of the disease. Marek's disease does not spread vertically. Before the development of the vaccine for Marek's disease, Marek's disease caused substantial revenue loss in the poultry industries of the