The percentage of "COVID-19 cases diagnosed in active-duty military personnel through the end of fiscal 2020" that were concentrated in four military occupation fields -- repair, engineering, communications, and intelligence -- according to a recent article in Military Times reporting on an article in the December 2020 issue of the Defense Health Agency's Medical Surveillance Monthly Report.
According to the report, of the 29,970 COVID-19 cases recorded among active-duty personnel through Sept. 30, 2020, 28% were among those in the repair or engineering fields, while 22% occurred in the intelligence or communications specialties. About 20% of cases had no determination of military occupational specialties, while nearly 14% were "combat-specific." More than 9% of all cases were health care personnel.
For the Reserves and National Guard, which had 2,498 cases in that timeframe, the repair and engineering military occupational specialties accounted for 23.3% of cases, while communications and intel made up 22.9%. The occupations of roughly 30% were unknown, while 8.1% of cases were in health care and 7.3% were in combat-specific specialties.