PT  - JOURNAL ARTICLE
AU  - J. A. Embil
AU  - R. G. Stephens
AU  - F. R. Manuel
TI  - Prevalence of recurrent herpes labialis and aphthous ulcers among young adults on six continents
DP  - 1975 Oct 04
TA  - Canadian Medical Association Journal
PG  - 627--630
VI  - 113
IP  - 7
4099  - http://www.cmaj.ca/content/113/7/627.short
4100  - http://www.cmaj.ca/content/113/7/627.full
SO  - CMAJ1975 Oct 04; 113
AB  - The prevalence of recurrent herpes labialis (RHL) and recurrent aphthous ulcers (RAU) in young adults - - 635 armed-forces recruits and 9897 health-profession students - - in 48 institutions in 21 countries was determined by a questionnaire survey. Two or more occurrences (lifetime prevalence) of RHL were reported by 33.2% of men and 28.0% of women; the corresponding figures for RAU were 38.7% and 49.7%. North American respondents, mainly from Canada, had a significantly higher prevalence of both lesions. There were some differences in relation to profession. Approximately 15% of all the people surveyed had had herpes labialis and 25% had had aphthous ulcers at least once during the previous year. Persons with a history of recurrence of one lesion were more likely to have a history of recurrence of the other.