They have a high frequency of occurrence, rise and fall within hundreds of years and are highly variable. (co2coalition.org)
Bordetella, or kennel cough, is so known due to its high frequency of occurrence in any facility that houses dogs, such as kennels and shelters. (professorshouse.com)
First, the limited sample size and duration of evaluation was not long enough to provide sufficient frequencies of occurrences for several measures such as specific categories of suspension rates such as physical fighting, weapon carrying and drug possession. (hqlo.biomedcentral.com)