As Charles-Edward Amory Winslow (1877-1957) emphasized in his classical work, The Conquest of Epidemic Diseases: A Chapter in the History of Ideas (1943), inapparent infection
is one of the most important concepts in infectious disease epidemiology, and it had for centuries been one of the key missing links, which prevented full understanding of the principles of disease transmission.
However, we could not exclude the possibility of inapparent infection
among healthcare workers in the 4 hospitals in Guangzhou.
5) demonstrated that mice, infected with WNV develop only an inapparent infection
Some persons may have clinically inapparent infection
or symptoms too mild to be definitively diagnosed, especially in disease-endemic areas (7,28).
We found that an unusually high percentage of the population had secondary DENV infections in what was considered at the time a nonendemic area; therefore, we proposed that cryptic DENV circulation causing inapparent infections
might be affecting this area (9).
So, it was concluded from the present study that 60% of grossly normal MLN had significant microscopic lesions indicating that incidental abnormal findings of MLN are common, reflecting more widespread inapparent infections
in goats which were not evident clinically but seen only at the time of postmortem.
Isolation of mumps virus from human beings with induced apparent or inapparent infections
are common and a high percentage of avian populations are positive.
The diagnostics protocol included a cold enrichment step, which made identifying nonpathogenic strains and inapparent infections
more likely and diagnosis more time-consuming (33).