Members of the surveillance teams and the hospital staff were not considered contacts, even if they were exposed to a case-patient, because they had been taught how to protect themselves.
Altogether 261 (54.6%) of the participants reported that they had been exposed to a known case of TB, the majority referred as part of a contact investigation.
We tested 46 fully vaccinated children in two day-care centers in Israel who were exposed to a fatal case of pertussis infection.
The questionnaire scores for each of the conditions (AW and AECOPD) were compared between students who were exposed to a clinical case during their rotation and those who were not, using student's t tests.
If physicians are exposed to a high case volume of patients with DCIS, and if they follow the guidelines and work in multidisciplinary teams, it is plausible that they will be aware of the existing literature covering the whole process of diagnostic work-up, treatment and follow-up.
Eighteen of 829 contacts exposed to a confirmed case-patient and 7 of 226 contacts exposed to a patient who had a probable case became infected, for secondary attack rates of 2.2% and 3.1%, respectively (p = 0.4).
Seven of 92 contacts exposed to a confirmed case-patient and 13 of 132 contacts exposed to a patient who had a probable case became infected, accounting for secondary attack rates of 7.6% and 9.8%, respectively (p = 0.8).
There is now evidence that a substantial proportion of persons exposed to a primary case-patient will have asymptomatic or very mildly symptomatic infection.
Subsequent probability of being exposed to an influenza case (exposure probability) was calculated and equals the number of exposed pilgrims divided by the total susceptible population (i.e. the total population excluding all pilgrims previously infected and thus regarded as immune, and those currently infected with influenza).
Students were exposed to a 1-hour case discussion session for each chief complaint and 90-min practical skills session for each procedure in the teaching program.
