Biological hazards and agents that determine it

Biological hazard is a threat that ariseswhen exposed to different pathogens. Violation of the normal functioning of the medical, social, technological, communal and agricultural spheres can provoke both a separate prion and multicellular parasites.

To prevent the spread of harmful agents, a special biohazard sign is placed in the places of their storage, production and use.

To date, various diseases pose a threat to human health and life. Many of them are transmitted or caused by various insects, parasitic plants and animals.

The biological hazard is characterized by varying degrees and depends on the extent to which the harmful factor is capable of harming a person.

The following organisms are classified as common forms of dangerous biological agents:

• different microbes;

• insects. So, mosquitoes become carriers of serious diseases - malaria, yellow fever, encephalitis. Flies suffer from various intestinal infections, and a flea bite can infect a person with a plague. Ticks cause typhus and recurrentfever, and scabies, which is often combined with other serious infections. It should be noted that spiders in most cases do not pose a threat, but exceptions are a black widow and a hermit. Lethal cases were recorded after bites of tarantulas;

• biological danger can concern scorpions. Their bites are not only very painful, but can also be fatal. Even some types of caterpillars and centipedes can cause severe pain and blistering on the skin, and in some cases provoke a fatal outcome (this applies to the so-called electric caterpillars found in Central America);

• wild bees and wasps;

• leeches. With their bites, the wound can become infected, which leads to complications;

• worms, causing disturbances in the work of the digestive system, as well as anemia and general weakness;

• poisonous snakes and lizards. It should be noted that biological danger can only be determined by lizards, which are common in desert areas. But, given their slow movement, the number of people affected is scanty.

Great threat to human life and healththere are various marine organisms - sharks, rays, jellyfish, as well as mammals (boars, lions and tigers, foxes and jackals, whose bites can cause rabies).

Threatening biological hazards are notOnly microorganisms, insects or animals of different levels of organization. These are also various poisonous plants that show their damaging effects when touched or when eaten. Among these plants are mangrove and black poisonous tree, shrub karasko, varnished wood in Japan.

There are still many plants with stinginghairs. They cause soreness when touched. Unpleasant sensations are associated with the action of formic acid, but these plants do not pose a threat to life. Despite this, contact with them should be avoided.