The subsequent increase in infectivity with increasing gametocyte density is best described by the Gompertz model (deviance information criterion, DIC = 1034), which gave a significantly better fit than the linear (DIC=1073), power (DIC=1059) or hyperbolic (DIC=1062) functions.
The uninfected CD4+ T cells become infected with infectivity (overline{lambda }_{1}+overline{lambda}_{2}+overline{lambda}_{3}).
As a full lactation was fed to the lambs we are unable to determine if colostrum, which is secreted by the mammary gland in the first four days of lactation, contains a high level of immunoglobulins and is considered unfit for human consumption, or subsequent milk, or both, carry infectivity.
Infected persons progress through a primary stage of infection with high infectivity, an asymptomatic stage with low infectivity, a symptomatic stage with high infectivity, to AIDS death.
The infectivity in certain tissues subsequent to CNS involvement may be a rare event incidental to the pathogenesis of the disease.
This report provides further information obtained from two follow-up studies, one where milk recipients were housed separately after milk consumption to confirm the validity of the high scrapie transmission rate via milk and the second to assess any difference in infectivity from colostrum and subsequent milk.
Because of that, an infected computer has infectivity during its latent period.
Finally, it might be necessary to improve the viability and infectivity of the immunizing sporozoites subsequent to their cryopreservation and transport to immunization centers.
The vector infectivity rate decreased further after subsequent MDAs, to 0.05% and 0.01% in post-MDA periods 4 and 6 (Table 3), respectively, although changes from post-MDA 3 period and onwards did not reach statistical significance due to the low number of infective vectors relative to the number of vectors dissected.
