The information below shows a list of types of Usher Syndrome, with information as to the prevalence of each of these types. Estimates of the people affected are calculated based on the available statistic.
| Disease | Prevalence Estimate | US people estimate | Statistic Used for Calculation |
| Usher Syndrome (overall) | approx 1 in 17,000 or 0.01% or 16,000 people in USA | 16,000 | 16,000 Americans |
| Usher Syndrome Type 1 | approx 1 in 25,000 or 0.00% or 10,880 people in USA | 10,880 | more than 4 per 100,000 people suffer from Usher syndrome type I, Genetics Home Reference website |
| Usher Syndrome Type 2 | N/A | N/A | No information |
| Usher Syndrome Type 3 | N/A | N/A | No information |
For more information about types of Usher Syndrome, refer to our section on types of Usher Syndrome.
The medical term 'prevalence' of Usher Syndrome usually refers to the estimated population of people who are managing Usher Syndrome at any given time, whereas the annual diagnosis rate of new cases of Usher Syndrome is called the 'incidence'. For more information on prevalence and incidence statistics, see about prevalence and incidence statistics.
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