By upu on June 8, 2011. Bacterial infection in stomach is a common infection. As the name suggests, it is caused by bacteria, this infection can be contracted when you eat or drink contaminated food or water, or if you are in close contact with bacteria infested object, or a person.ommon symptoms of bacterial infection in stomach are: 1  Pain in stomach with cramps in the stomach. 2  Diarrhea. 3  Gastritis, with retrosternal burning and waterbrash. 4  Dark or black color of stool. 5  Cramps in abdomen. 6  Stomach ulcer. 7  Aggravation of pain in stomach after intake of food. 8  Vomiting and nausea. 9  Weight loss. 10  General feeling of tiredness. 11  Fever.
P. carinii pneumonia is the most common life-threatening opportunistic infection in AIDS patients, accounting for 52% of primarily diagnoses.' Infectious agents involving the central nervous system include mycobacteria, Toxoplasma gondii, Aspergillus organisms, Cryptococcus neoformans, and Candida albicans.
Other dysregulation of the immune system includes autoimmune diseases such as lupus and rheumatoid arthritis. Finally, some less common disease related to deficient immune system conditions are antibody deficiencies and cell mediated conditions that may show up congenitally, Lau told Live Science.isorders of the immune system can result in autoimmune diseases, inflammatory diseases and cancer, according to the NIH. Immunodeficiency occurs when the immune system is not as strong as normal, resulting in recurring and life-threatening infections, according to the University of Rochester Medical Center.