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Detectable seroconversion and the timeline of seroconversion are among of the parameters studied in evaluating the efficacy of vaccines. A vaccine does not need to have a 100% seroconversion rate to be effective. As long as a sufficient proportion of the population seroconverts, the entire population will be effectively protected by herd ...
[4] [2] [7] In places with higher rates of blood-borne diseases in the general population, healthcare workers are more susceptible to contracting these diseases from a needlestick injury. [7] Hepatitis B carries the greatest risk of transmission, with 10% of exposed workers eventually showing seroconversion and 10% having symptoms. [8]
Seroconversion is defined as an increase in HI (Hemagglutination-Inhibition) antibody titer of at least 4-fold, with a minimum post-vaccination HI titer of 1:40. I believe this refers to results from a Viral Hemagglutination Assay
The seroconversion rate was defined as GMFR > 4. Based on the GMFR of anti-S IgG, the seroconversion rates of groups Nanocovax 25 mcg, 50 mcg and 75 mcg on day 35 were 84%, 84% and 85%. At day 42, the seroconversion rates of these respective groups were 100%, 99% and 100%.
The window period for HIV may be up to three months, depending on the test method and other factors. RNA based HIV tests has the lowest window period. Modern and accurate testing abilities can cut this period to 25 days, 16 days, or even as low as 12 days, again, depending on the type of test and the quality of its administration and interpretation.
Main symptoms of acute HIV infection. Acute HIV infection, primary HIV infection or acute seroconversion syndrome [1]: 416 is the first stage of HIV infection. It occurs after the incubation stage, before the latency stage, and the potential AIDS succeeding the latency stage.
In Phase II results published in The Lancet, on the two-dose schedule, seroconversion rates of neutralizing antibodies after the second dose were 76% (114 of 150 participants) in a 25 μg group and 72% (108 of 150) in a 50 μg group. On the three-dose schedule, seroconversion rate of neutralizing antibodies after the third dose were 97% (143 of ...
In the case of HIV exposure, post-exposure prophylaxis (PEP) is a course of antiretroviral drugs which reduces the risk of seroconversion after events with high risk of exposure to HIV (e.g., unprotected anal or vaginal sex, needlestick injuries, or sharing needles). [22]