infektiolähteiden

Infektiolähteiden refers to the sources from which infectious agents, such as bacteria, viruses, fungi, or parasites, can be transmitted to a susceptible host. Identifying and controlling these sources is a fundamental principle of infection prevention and control. Sources can be broadly categorized as either animate or inanimate.

Animate sources include infected individuals, animals, and even vectors like insects that can carry pathogens. Infected humans can transmit microorganisms through respiratory droplets, direct contact, feces, or bodily fluids. Animals can harbor zoonotic diseases transmissible to humans. Vectors, such as mosquitoes or ticks, can transmit pathogens by biting an infected host and then biting a susceptible host.

Inanimate sources, often referred to as the environment, include contaminated objects and surfaces. This can encompass water, food, soil, medical equipment, and general environmental surfaces like doorknobs or countertops. Pathogens can survive on these surfaces for varying periods, posing a risk of indirect transmission through touch. Understanding the diverse nature of infektiolähteiden is crucial for implementing effective strategies to break the chain of infection and prevent outbreaks.