cryptoendemic
Cryptoendemic refers to a disease or pathogen that is present in a specific geographic region or population but whose existence is largely unknown or poorly documented. This can be due to several factors, including the rarity of the disease, its mild symptoms that are often misdiagnosed, or a lack of surveillance and research in the affected area. The term "crypto" implies something hidden or secret.
Diseases can remain cryptoendemic for extended periods because they might not cause significant public health crises
The discovery of a previously cryptoendemic disease can have significant implications for public health. It may