(redirected from infectivity)
Also found in: Thesaurus, Medical, Legal, Wikipedia.
Related to infectivity: antigenicity, toxigenicity


Capable of producing infection; infectious.

in·fec′tive·ness, in′fec·tiv′i·ty n.


1. (Pathology) capable of causing infection
2. a less common word for infectious
inˈfectively adv
inˈfectiveness, ˌinfecˈtivity n


(ɪnˈfɛk ʃəs)

1. communicable by infection, as from one person to another or from one part of the body to another.
2. causing or communicating infection.
3. tending to spread quickly and generally: infectious laughter.
4. Obs. diseased.
in•fec′tious•ly, adv.
in•fec′tious•ness, n.
syn: See contagious.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.infective - able to cause disease; "infective agents"; "pathogenic bacteria"
unhealthful - detrimental to good health; "unhealthful air pollution"; "unhealthful conditions in old apartments with peeling lead-based paint"
2.infective - caused by infection or capable of causing infection; "viruses and other infective agents"; "a carrier remains infective without himself showing signs of the disease"
infected, septic - containing or resulting from disease-causing organisms; "a septic sore throat"; "a septic environment"; "septic sewage"


[ɪnˈfektɪv] ADJ [disease, agent] → infeccioso


adj (Med) agentinfektiös; infective diseaseInfektionskrankheit f
References in periodicals archive ?
The infectivity of nematodes against larvae, after treatment with all the pesticides/biopesticides, was examined by using the 1:1 sand-well bioassay (Grewal et al.
Contract notice:Development and validation of an extraction and cell culture based method to assess hepatitis E virus (HEV) infectivity in pork meat and pork products.
Although virus titers of desiccated mosquitoes had been reduced, evidence of residual infectivity indicates that precautions, such as use of proper personal protective equipment and appropriate biosafety protocols, are required when handling field-collected samples regardless of storage conditions because these samples might contain viable virus.
If in the sample 50 % of the individuals appeared to be free larvae, we proceeded to evaluate the infectivity.
Nevertheless, the compartmental models are too simplified to describe various spreading processes in real-world systems partly because the infectivity is treated as linear.
This infectivity assay, without using non-infectivity assays such as PCR, has the ability to detect viable BPyV in 3 weeks or less, with increased specificity and sensitivity compared with other assays on the market.
The period of infectivity has not been definitively established, some saying it lasts from two to four days prior, until two to five days following the onset of the rash (i.
50]) and also the concentration of extracts that inhibited viral infectivity (cytopathic effect) by 50% ([IC.
The infectivity, reproduction and size of progeny of EPNs may be related to nematode behavior, adaptation to a given host (ability to overcome the defense mechanism of host) (Kaya, 1990) and different developmental stages and size of the host (Murdoch et al.
Variations in the infectivity and specificity of infective juveniles (IJs) of these nematodes are influenced by diverse factors, including behavior, physiology, geographic origin and physical factors of the habitat (Doucet et al.
Washington, April 27 ( ANI ): Scientists have discovered new vulnerable site on the HIV virus that can be attacked by human antibodies in a way that neutralizes the infectivity of a wide variety of HIV strains.
Now researchers at the National Institute for Public Health and the Environment in Bilthoven and the Institute for Risk Assessment Sciences at Utrecht University, the Netherlands, report that most pesticides do not counteract the infectivity of norovirus in contaminated water.