H. Influenzae - gram-negative pleomorphic rod-shaped or coccoid cells measuring (0.2-0.3) x (0.5-2) μm. They are located in strokes singly or in pairs, and sometimes in the form of short chains and groups. On dense media, small (up to 1 mm in diameter) round, colorless colonies are formed. Microorganisms are immovable, they do not form a spore, but the formation of capsular forms with which they bind pathogenic properties is possible. The causative agent produces endotoxin, the carrier of which is considered capsular polysaccharides.
Hemophilic infection is manifested by purulent meningitis, otitis media, various diseases of the respiratory tract (pneumonia, bronchitis, epiglottitis), conjunctivitis, endocarditis, osteomyelitis, etc.
Crimean hemorrhagic fever is a natural focal viral disease transmitted by ixodid mites. The disease is accompanied by a fever. Severe intoxication and hemorrhagic syndrome.
Omsk hemorrhagic fever (OGL) is an acute infectious disease of a viral nature with a transmissible transmission, accompanied by fever, hemorrhagic diathesis, transient kidney damage, central nervous system and lung.
Hemorrhagic fever with renal syndrome (HFRS) (hemorrhagic nephrozonephritis, Tula, Urals, Yaroslavl fever) is an acute infectious disease of the viral nature, characterized by fever, intoxication, hemorrhagic and renal syndromes.
Opisthorchiasis is a chronic helminthiasis with a primary lesion of the biliary system and the pancreas. In indigenous children of highly endemic foci, invasion usually occurs subclinically and is realized in mature or old age. In the area of endemia, visitors from non-endemic opisthorchiasis areas develop an acute stage of the disease of varying severity, followed by a transition to a chronic one.
Trichinosis is an acute fever caused by a round worm - trichinella. It is accompanied by muscular pains, edema of the face, various rashes on the skin, hypereosinophilia of the blood, in case of severe myocarditis, focal lesions of the lungs, meningoencephalitis.
Trichocephalosis is a chronic helminthiasis caused by a round worm - a withered head, with a primary lesion of the gastrointestinal tract, anemia and asthenia. Trichocephalosis is widespread in all climatic zones of the globe, excluding deserts and permafrost zones. The severity of the population of humid tropics and subtropics is especially high, where invasion is detected in 40-50% of cases.
Ascariasis is an invasion of the roundworm by an ascarid. It can initially take the form of an allergic disease with fever, skin eruptions, "volatile" eosinophilic infiltrates in the lungs, hypereosinophilia of the blood; in a chronic stage, ascariasis is usually accompanied by mild abdominal pain, dyspepsia, sometimes asthenia.
The incubation period of HIV infection is from 2 weeks to 2 months. The duration of the incubation period depends on the ways and nature of the infection, the infection dose, the age of the child and many other factors. When infected through blood transfusion, this period is short, and for sexually transmitted infections it is longer.
