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.
Organisms that cause continued irritation (disease) include viruses, bacteria, fungi, parasitic plants, and nematodes (Figure 1). Plant diseases are almost always caused by fungi and rarely caused by bacteria.In people this fungi-to-bacteria ratio is reversed.rganisms that cause continued irritation (disease) include viruses, bacteria, fungi, parasitic plants, and nematodes (Figure 1). Plant diseases are almost always caused by fungi and rarely caused by bacteria.