infekních

Infekční is a Czech adjective meaning infectious or relating to infection. It is used in medical, scientific and general-language contexts to describe diseases, agents or processes connected with infection. The standard genitive plural form is infekčních; a form like infekních is considered a misspelling in correct Czech usage.

In medical terminology, infekční describes things that are caused by pathogens and can be transmitted between individuals. Common phrases include infekční onemocnění (infectious disease), infekční agent (infectious agent, such as a virus, bacterium, fungus or parasite), and infekční období (infectious period), which refers to the time during which an infected person can spread the pathogen to others. The term is also used to distinguish infectious from non-infectious causes of illness.

Nakažlivý is a related Czech term often used in more general language to mean contagious or transmissible by contact. While infekční emphasizes the involvement of pathogens and infection mechanisms, nakažlivý focuses on the ease of spread from person to person. In clinical contexts, both terms can appear, but infekční carries a more technical nuance.

Etymology traces infekční to Latin infectiosus, through Czech and other European languages, reflecting the concept of infection and the presence of a pathogen. The word remains central to discussions of public health, epidemiology and clinical medicine in Czech-speaking contexts. See also infectious disease, pathogen, and transmission.