Severing of axons from their cell bodies blocked neuron-to-cell spread of infection, indicating that transmission of infection requires the presence of intact axons (Fig. 2).
Fighting cocks may also play a role in the spread of infection and in transmission to humans.
Phylogenetic and clustering analyses can provide useful information on clinical and demographic factors shaping HIV transmission in specific geographic areas, and when geographic data is available, can identify the specific location and spread of HIV transmission hotspots.
If herd effect could reduce the spread of rotavirus transmission to this age group, it has the potential to produce a sizeable reduction in the number of rotavirus cases in the elderly population in Germany.
Spread of malaria transmission.
We believe that the surge in common use of nitrite inhalants could fuel the rapid spread of HIV transmission.
Alternatively, it remains possible that appropriate genetic variation can arise, but that selection simply does not favor the spread of biological transmission in HIV or other retroviruses.
Understanding the different sources, the dynamics of spread and transmission of S. uberis is a prerequisite for the development of mastitis control programs.
