Infektios
Infektios is a term used in some languages and contexts to denote something that is infectious or capable of causing infection. In medical usage, it refers to pathogens and diseases that can be transmitted from one person to another. Infektios pathogens include bacteria, viruses, fungi, and parasites. Transmission occurs via direct contact, respiratory droplets, aerosols, contaminated surfaces, vectors, or vertical transmission from mother to child. The level of contagiousness is often summarized by the basic reproduction number, R0, which estimates how many people, on average, one infected person will infect in a susceptible population.
Clinical presentation depends on the pathogen and can range from mild to severe; some infections are asymptomatic.
Prevention emphasizes vaccination where available, as well as hygiene practices, safe food handling, clean water, and