Please select the eligibility criteria that correspond to the clinical trial below.
Title: a Randomized Controlled Trial Evaluating the Effectiveness and the Safety of Surgical Masks Wared by the Index Patient for Preventing Secondary Transmission of Influenza A in Households
Brief Summary: This work aims to measure the effectiveness of face mask worn by a patient with flu to avoid transmission to other persons in the household.


Options:
A: Inclusion Criteria:

* Clinical site leadership has agreed to have one or more staff participate in the trial
* Subject meets the definition of "healthcare personnel"
* Subject able to read and sign informed consent
* Subject agrees to all requirements of the protocol, including fit testing and diary keeping
* Subject's age is 18 or greater
* Subject passes fit testing for one of the study supplied respirator models and agrees to use that model for the entire intervention period of the study (if in respirator arm).

Exclusion Criteria:

* Subject self-identified as having severe heart, lung, neurological or other systemic disease that one or more Investigator believes could preclude safe participation
* Known to not tolerate wearing respiratory protective equipment for any period
* Facial hair, or other issue such as facial adornments, precluding respirator OSHA-compliant fit testing or proper mask fit during the study period
* Advised by Occupational Health (or other qualified clinician) to not wear the same or similar respirator or medical mask models used in this study
* In the opinion of the Investigator, may not be able to reasonably participate in the trial for any reason
* Self-identified as in, or will be in the third trimester of pregnancy, during the study period.
* Subject rotating in 2 different ResPECT study clinic sites /clusters during the 12-week study period.
* Subject works less than 75% of the intervention period in that clinic.
* Subject is a previous participant of the ResPECT Study, but does not consent for data from previous flu season(s) to be linked.
B: Inclusion Criteria:

Patient seeking medical advice for:

* For symptoms less than 48 hours, combining fever\> = 37.8 ° C and a cough,
* during the period of a seasonal influenza epidemic (as defined by the Sentinel network)
* Older than 5 years
* And living in a household size between 3 to 8..
* The patient is the first case in the household (index patient). The patient has a positive rapid influenza A test.
* Informed consent.
* Affiliation to the social security.

Exclusion Criteria:

* When concomitant influenza cases are known in other householders
* When the patient is suffering from asthma or COPD (ongoing treatment):
* Hospitalization.
* Treatment by a neuraminidase inhibitor.
C: Inclusion Criteria:

* aged from 15 to 20 years
* obtained written informed consent from both the student and parent before participation
* possible to gargle during 90 days
* possible to fill in questionnaire

Exclusion Criteria:

* Possessing allergy to green tea
* Possessing history of influenza infection within 6 months before entering the study
* Possessing severe immune disease or whole body infection
* severe cardiac, respiratory, renal, or hepatic dysfunction
* diagnosed as inadequate to participate in the study by student doctor
D: Inclusion Criteria:

* Member of family with influenza infected member

Exclusion Criteria:

* Age less than 2 yr

Answer: B