The phrase "an unusually high frequency" is correct and usable in written English.
It can be used to describe a rate or occurrence that is significantly above what is typical or expected.
Example: "The study revealed an unusually high frequency of errors in the data collection process."
Alternatives: "a notably elevated frequency" or "an exceptionally high rate".
In Tasmania, there is an unusually high frequency of HD in one large clan of English origin.
In addition, an unusually high frequency of tandem base substitutions (17%) was observed among the mutations from comfrey-fed rats.
Indiana is part of a belt of Midwestern states with an unusually high frequency of severe storms.
For example, the Aland archipelago near Sweden, which has an unusually high frequency of HD, has been exposed to other populations, including the British, for centuries.
Conventionally, genetic sleuthing has focused on families or populations within which certain mutations occurred at an unusually high frequency, exposing the effects of deleterious variants.
For example, the Afrikaner population of South Africa has an unusually high frequency of the gene responsible for Huntington's disease because the gene version drifted to high frequency as the population grew from a small starting population.
[ 15- 17] In this study Uganda contributed the bulk of Kaposi's sarcoma cases as shown in table 1, hence Ziegler et al's report may be a good explanation for this unusually high frequency of KS in our series.
A Y-chromosomal lineage that is rare in India but common in western Asia was found at unusually high frequency in an Indian Shiya Muslim sample, and structuring by religion has been seen among Jewish maternal (although not paternal) lineages.
Characteristics of BEN No. 3 chromosomal anomalies in terms of extremely high frequencies of 3q25 homologue discordance, chromosome breaks at the 3q25 band, structural aberrations affecting the 3q25 band, unusually high frequency of acquired chromosomal aberrations and a family history with 1 or 2 BEN parents were identified in five relatives.
Migraines also occur with unusually high frequency in persons who are characteristically hardworking and who set high and demanding standards for themselves.
