Due to the long incubation period of the disease it may be years before results are collated.
A parasite may be restricted during a long incubation-period, however, and rampant and destructive later (Ustilago).
Members stated that the 72 hour incubation period used in the micronucleus assay was inappropriate.
The parvo virus requires a seven to 14 day incubation period before internal effects and symptoms begin to develop.
The incubation period ranges from three to 21 days, but cases are most infectious from seven to ten days before and after the onset of symptoms.