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.
This publication is available in PDF format only. Most trees and shrubs are susceptible to dieback and cankers caused by several species of the fungal genus Botryosphaeria.Botryosphaeria fungi are typically opportunistic pathogens. Opportunistic pathogens only cause disease on plants that are stressed.ost trees and shrubs are susceptible to dieback and cankers caused by several species of the fungal genus Botryosphaeria. Botryosphaeria fungi are typically opportunistic pathogens.