Pacheco's disease Pacheco's disease Pacheco's disease is an acute and often lethal infectious disease in psittacine birds. The disease is caused by a species of herpesvirus, Psittacid alphaherpesvirus 1 (PsHV-1), which consists of four genotypes. Birds which do not succumb to Pacheco's disease after infection with the virus become asymptomatic carriers that act as reservoirs of the infection. These persistently infected birds, often Macaws, Amazon parrots and some species of conures, shed the virus in feces and in respiratory and oral secretions. Outbreaks can occur when stress causes healthy birds who carry the virus to shed it. Birds generally become infected after
White band disease the Caribbean region, white band disease in the Indo-Pacific region has been found on approximately 34 species of massive, branching and plating corals instead of just simply Elkhorn and Staghorn corals. White band disease is highly contagious through direct contact between diseased and healthy coral tissue. It can also be transmitted by the corallivorous snail, which means that the species consumes coral, "Coralliophila abbreviata". "C. abbreviata", a species native to the region where Elkhorn and Staghorn corals are found, is able to act as a "reservoir" for white band disease, meaning that it is able to retain the disease pathogen