âif you have HIV and one or more of these OIs, you will be diagnosed with AIDS, no matter what your CD4 count happens to be: 1  of bronchi, trachea, esophagus, or lungs. , 2  chronic intestinal (greater than 1 month's duration). 3  disease (particularly CMV retinitis). , 4  HIV-related.
Organisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic plants.Not included are ectoparasites like insects, mites, vertebrate, or other pests that affect plant health by consumption of plant tissues.rganisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic plants.
Most tree diseases are caused by fungi which thrive during moist, warm weather common at the start of the growing season. Properly timed disease treatments can prevent the production, growth and spread of spores that cause tree diseases.ost tree diseases are caused by fungi which thrive during moist, warm weather common at the start of the growing season. Properly timed disease treatments can prevent the production, growth and spread of spores that cause tree diseases.