If human-to-human transmission is determined to be occurring, then the above parameters are estimated from the symptom dates and contact information from the population under study.
We considered WNND cases in which the reported onset of symptom dated from CDC weeks 35 37 as potentially influenced by the hurricane.
Participants also contributed information on demographics, past medical history, influenza related symptoms, date of illness onset, and details on oseltamivir treatment.
7 8 The self sampling participant questionnaire collected data regarding presenting symptoms, date of symptom onset, and date of self swab.
Variables collected for surveillance purpose included: age, sex, clinical symptoms, date of symptom onset, date of swabbing, vaccination status for both pandemic and seasonal vaccines, and laboratory data (confirmation, influenza type/subtype, strain).
For each patient three time-points had been recorded: date of first symptoms, date of first consultation of a medical doctor, date of first specific treatment.
Information for each dengue case includes patient information (e.g., sex, age, race, and neighborhood), diagnosis date, first symptoms date, hospitalization date (if any), final condition, and reporting institution.
A questionnaire was used to collect demographic characteristics, signs and symptoms, date of illness onset, laboratory results, and suspected exposures before onset of illness.
Primary care measurements were: date of first symptom and other symptoms, date of first contact with GP due to CRC symptoms, examinations and visits before diagnosis and their results, and date and information included in the referral.
