Also, the infrequency with which vaccines are administered among the general population since the eradication of the disease would leave most people unprotected in the event of an outbreak.
In the past, the infrequency of civilian demand for such a service confined such operations to the military, which requires them to support overseas combat operations.
Trains run with relative infrequency from this station given the actual and potential ridership, 30 to 40 minutes apart in rush hour and 1 hour or longer apart off-peak.
It was found that these birds have relatively ineffective methods of anti-predation and that only social anti-predation and the infrequency of encounters with predators were keeping these lekking males alive.