infectivity


Also found in: Dictionary, Thesaurus, Wikipedia.
Related to infectivity: antigenicity, toxigenicity

in·fec·tiv·i·ty

(in'fek-tiv'i-tē),
1. The characteristic of a disease agent that embodies capability of entering, surviving in, and multiplying and causing disease in a susceptible host.
2. The proportion of exposures in defined circumstances that result in infection.

in·fec·tiv·i·ty

(in'fek-tiv'i-tē)
1. The characteristic of a disease agent that embodies its capability to enter, survive in, and multiply in a susceptible host.
2. The proportion of exposures in defined circumstances that result in infection.

in·fec·tiv·i·ty

(in'fek-tiv'i-tē)
Characteristic of a disease agent that embodies capability of entering, surviving in, and multiplying and causing disease in a susceptible host.

Patient discussion about infectivity

Q. Yeast infection in bloodstream How to get rid of yeast infection systemically.

A. there are several treatments and medications against systemic fungal infections, yeasts included. but in order to get treated you have to go through a proper diagnosis and a Dr. should check what kind of fungus you are having and prescribe the medication that fits it. me throwing all sort of medication names won't give you anything. this has to be checked out with a blood test and a culture.

Q. Is this an infection or pregnancy? I am worried with the white odorless mucus discharge. My hubby and I are also trying for baby. I have browsed the web and found that this could be possible infection also. Is this an infection or pregnancy?

A. It’s a cervical discharge and mucus secreted may be majorly a sign of pregnancy. I too had the same symptom but was tested positive for pregnancy. At times it may be a normal vaginal discharge. Generally it will be a yeast infection. Just check for your body temperature changes as it indicates good for you. Your mucus will be like raw egg white, the more thick more chances for positive. Keep a check on these factors. I shall suggest you to visit the doctor to confirm the same instead of making your own conclusions.

Q. What are the symptoms of salmonella infection?

A. Dehydration is the principal clinical concern. The incubation period – the time between ingestion of Salmonella bacteria and the onset of illness – varies from six to 72 hours.Salmonella can cause three different kinds of illness: gastroenteritis, typhoid fever, and bacteremia.Symptoms of Salmonella gastroenteritis include diarrhea, abdominal cramps, fever, nausea, and/or vomiting.In mild cases diarrhea may be non-bloody, occur several times per day, and not be very voluminous; in severe cases it may be frequent, bloody and/or mucoid, and of high volume. Fever generally occurs in the 100°F to 102°F (38°C to 39°C) range. Vomiting is less common than diarrhea. Headaches, myalgias (muscle pain), and arthralgias (joint pain) are often reported as well.Whereas the diarrhea typically lasts 24 to 72 hours, patients often report fatigue and other nonspecific symptoms lasting 7 days or longer. For the full article: http://www.about-salmonella.com/salmonella_symptoms_risks

More discussions about infectivity
References in periodicals archive ?
The number of nematodes that penetrate a host is a measure that has often been used to evaluate infectivity in bioassays.
Higher rate of infectivity in female participants in our study could be related to variations in sample size, gender differences in various jobs associated with production and distribution of foodstuffs although this suggestion needs further investigations.
Therefore, positive results from PCR assays may require further investigation and confirmatory tests to determine if infectious virus is present, such as infectivity assays.
The highest potential risk from exposure to high or low infectivity tissues is through direct inoculation (for example, needle-sticks, puncture wounds, sharps, injuries, or contamination of broken skin).
Influence of production and bioassay methods on infectivity of two ambush foragers (Nematoda: Steinernematidae).
Data obtained for mice inoculated with bone marrow samples were also used to estimate prion infectivity levels in these samples.
This differential infective capability among members of the cohort originating from the different females, would infer that the variability in the infectivity of C.
It is the only one that is in the plasma membrane and involved in the inhibition of HIV infectivity. Therefore, the transmembrane domain 10 is key to the SERINC5 activity as a viral restriction factor.
He observed that his model fills the gap between Bailey's simple stochastic epidemic model [13] (which is obtained as a special case of Kermack and McKendrik's model when the infectivity parameters f(t) and g(t) are constants) and the Reed-Frost model [12] (when the functions f(t) and g(t) are Dirac delta functions).
Without loss of generality, let [beta] = 1; hence the effective infectivity rate [lambda] = [eta]/[beta] = [eta].
This showed that at such a low concentration (<0.03mg/ml) the extract was able to inhibit viral infectivity by 50% and the selectivity index of >125 shows that before the extract will be toxic to 50% of the cells, it will be at a concentration <0.03mg/ ml multiplied by >125.