Which disease is contracted through contact with infected birds or inhalation of their waste, with an incubation period of 4-15 days?

Psittacosis is the correct answer because it is a disease caused by the bacterium Chlamydia psittaci, which is primarily associated with birds, particularly parrots and other avian species. Humans typically contract psittacosis through direct contact with infected birds, such as handling them, or through inhaling dust and aerosols from their droppings. The range for the incubation period of this disease is indeed 4-15 days, during which an infected individual may not show symptoms but could still be contagious.

The other choices are associated with different transmission methods and causative agents. Myiasis involves the infestation of the body by larvae of flies; Tularemia is primarily transmitted through contact with infected animals or contaminated water; while Filariasis is a parasitic disease spread by mosquitoes. Each of these diseases has distinct modes of transmission and associated vectors, which clarify why they do not fit the description provided in the question.