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Infection of humans or animals with hookworms of the genus ANCYLOSTOMA. Characteristics include anemia, dyspepsia, eosinophilia, and abdominal swelli…

Aneurysm due to growth of microorganisms in the arterial wall, or infection arising within preexisting arteriosclerotic aneurysms.

A reactive vascular proliferation that is characterized by the multiple tumor-like lesions in skin, bone, brain, and other organs. Bacillary angiomat…

Infection with roundworms of the genus ANISAKIS. Human infection results from the consumption of fish harboring roundworm larvae. The worms may cause…

An acute infection caused by the spore-forming bacteria BACILLUS ANTHRACIS. It commonly affects hoofed animals such as sheep and goats. Infection in …

Acute inflammation of the APPENDIX. Acute appendicitis is classified as simple, gangrenous, or perforated.

Infections caused by arthropod-borne viruses, general or unspecified.

Virus diseases caused by the ARENAVIRIDAE.

Infections caused by viruses of the genus ARTERIVIRUS.

Arthritis caused by BACTERIA; RICKETTSIA; MYCOPLASMA; VIRUSES; FUNGI; or PARASITES.

An aseptic, inflammatory arthritis developing secondary to a primary extra-articular infection, most typically of the GASTROINTESTINAL TRACT or UROGE…

Infection by nematodes of the genus ASCARIS. Ingestion of infective eggs causes diarrhea and pneumonitis. Its distribution is more prevalent in areas…

Infection with nematodes of the genus ASCARIDIA. This condition usually occurs in fowl, often manifesting diarrhea.

Infections with nematodes of the order ASCARIDIDA.

Infections with fungi of the genus ASPERGILLUS.

Hypersensitivity reaction (ALLERGIC REACTION) to fungus ASPERGILLUS in an individual with long-standing BRONCHIAL ASTHMA. It is characterized by pulm…

Infections with ASTROVIRIDAE, causing gastroenteritis in human infants, calves, lambs, and piglets.

A group of transmissible viral diseases of chickens and turkeys. Liver tumors are found in most forms, but tumors can be found elsewhere.

Infections with viruses of the genus AVULAVIRUS, family PARAMYXOVIRIDAE. This includes NEWCASTLE DISEASE and other infections of domestic fowl.

A group of tick-borne diseases of mammals including ZOONOSES in humans. They are caused by protozoa of the genus BABESIA, which parasitize erythrocyt…

Infections with bacteria of the family BACILLACEAE.

The presence of viable bacteria circulating in the blood. Fever, chills, tachycardia, and tachypnea are common acute manifestations of bacteremia. Th…

Infections by bacteria, general or unspecified.

Infections caused by bacteria and fungi, general, specified, or unspecified.

Bacterial infections that may be transmitted between non-human animals and HUMANS.

The presence of bacteria in the urine which is normally bacteria-free. These bacteria are from the URINARY TRACT and are not contaminants of the surr…

Infections with bacteria of the family BACTEROIDACEAE.

Infections with bacteria of the genus BACTEROIDES.

Infection by parasites of the genus BALANTIDIUM. The presence of Balantidium in the LARGE INTESTINE leads to DIARRHEA; DYSENTERY; and occasionally UL…

Infections by the genus BARTONELLA. Bartonella bacilliformis can cause acute febrile anemia, designated Oroya fever, and a benign skin eruption, call…