Intake questionnaire

At the beginning of each season, each participant is required to complete an intake questionnaire once. Not all questions and answers are presented in every season. Some questions have the extra possible answers 'Other' (o), 'Don't know' (d) and/or 'None' (n).

Column Question Answers
uid Unique user id
qid Unique intake id
qdate Date of the completed/updated questionnaire
q100 Postal code (home)
q110 Postal code (work/school)
q200 Gender   1. Male
  2. Female
q300 Birth date
q400 Daily routine   1. School
  2. Work
  3. Home
  4. Retired
  5. Full time employment
  6. Part time employment
  7. Self-employed
  8. Home-maker
  9. Unemployed
 10. Long-term sick or parental leave
q410 Job type of (self-)employed participants   1. Professional
  2. Office work
  3. Retail, sales, catering, hospitality or leisure
  4. Skilled manual worker
  5. Other manual work
q420 Highest level of formal education/qualification   1. No formal qualification
  2. GCSE's, levels, CSEs or equivalent
  3. A-levels or equivalent
  4. Bachelors or equivalent
  5. Higher degree or equivalent
  6. Still in education
q500 Main means of transport   1. Bicycle
  2. Motorcycle
  3. Car
  4. Walking
  5. Public transport
  6. Motor or bicycle
  7. Walking or bicycle
q550 Time (minutes) in public transport
q600 Colds per year
q700 Seasonal vaccination   1. Yes
  2. No
  3. Later
q705 Vaccine date
q706 Vaccine date second shot
q707 Your GP invited you to take vaccine   1. Yes
  2. No
q710 Vaccination reason   1. GP recommendation
  2. To protect me
  3. To protect others
  4. Part of risk group
  5. Company vaccination
  6. Easily available
  7. Free
  8. Not missing school/work
  9. Believe in vaccine efficacy
 10. Always get a vaccine
q720 Non-vaccination reason   1. GP recommendation
  2. No protection
  3. Vaccine causes flu
  4. Side effects
  5. Will get later
  6. No risk group
  7. Prefer natural immunity
  8. Flu is innocent
  9. Not easily available
 10. Not free
 11. Do not like injections
 12. No specific reason
 13. Not offered
 14. Not susceptible
 15. Do not like vaccinations
 16. Inspite of GP advice
q730 Pandemic vaccination   1. Yes
  2. No
  3. Later
q735 H1N1 Vaccine date
q736 H1N1 Vaccine date second shot
q740 H1N1pdm Vaccination reason   1. GP recomendation
  2. To protect me
  3. To protect others
  4. Part of a risk group
  5. Company vaccination
q750 H1N1pdm non-vaccination reason   1. GP recommendation
  2. No protection
  3. I will get flu
  4. Side effects
  5. Will get later
  6. No risk group
q760 Vaccinated previous season   1. Yes
  2. No
q800 Chronic diseases   1. Asthma
  2. Diabetes
  3. Heart disease
  4. Kidney disorder
  5. Immunodeficiency
  6. Lung disease
  7. Asthma or lung disease
q850 Allergy   1. Hay fever (pollen)
  2. House dust mites
  3. Pets
q900 Smoking   1. Not
  2. Sometimes
  3. Daily
  4. Regularly
  5. Less than 10 cigarettes per day
  6. More than 10 cigarettes per day
  7. Only cigars
q1000 Vegetables and fruit   1. Never
  2. Rarely
  3. Regularly
q1010 Vitamins   1. Never
  2. Rarely
  3. Regularly
q1020 Diet   1. Vegetarian
  2. Vegan
  3. Low calorie
q1100 Sport hours per week
q1200 Household   1. Alone
  2. Only with adults
  3. With children
q1210 Children   1. Home
  2. Nursery
  3. School
  4. School or nursery
q1211 Number of children (0-4) go to nursery/day care
q1212 Don't have children (0-4)
q1220 Pets at home   1. Dogs
  2. Cats
  3. Birds
q1250 Ages household
q1251 Unknown ages
q1260 Occupation of each household member   1. Work
  2. School
q1270 household size
q1400 Statin drugs   1. Lipitor, Torvast, Zarator (generic: Atorvastatin)
  2. Lipobay, Baycol (generic: Cerivastatin)
  3. Lescol, Lescol XL (generic: Fluvastatin)
  4. Mevacor, Altocor (generic: Lovastatin)
  5. Zocor (generic: Simvastatin)
  6. Livalo, Pitava (generic: Pitavastatin)
  7. Pravachol, Selektine, Lipostat (generic: Pravastatin)
q1500 Frequent contact   1. Groups (10+) of children (<18 year)
  2. Groups (10+) of seniors (>65 year)
  3. Patients
  4. Crowd (10+) of people in the same place
q1600 Pregnant (women 16-49)   1. Yes
  2. No
q1610 Pregnancy trimester   1. First
  2. Second
  3. Third
q1700 Who is filling this questionnaire   1. Myself
  2. Household member
  3. Someone else
q1800 Where did you hear about Influenzanet?   1. Radio or television
  2. Newspaper or magazine
  3. Internet
  4. Poster
  5. Family or friends
  6. School or work
  7. Television
  8. Radio
  9. Conference
 10. Influenzanet team
 11. I participated last season
vaccin Vaccinated during the season   1. Vaccine seasonal flu
  2. Vaccine mexican flu
age Age
start_date Date since when a participant is considered active
end_date Date until a participant is considered active
surveys Number of completed surveys
days Active period
freq Survey frequency

Weekly symptoms' questionnaire

Every participant is reminded weekly to complete a symptoms questionnaire. The final questions are only asked if the participant reported any symptoms. Not all questions were present in every country or season.

Column Question Answers
sid Unique survey id
uid Unique user id
sdate Date filled in the questionnaire
s100 Any of the following symptoms since your last visit?   1. Runny or blocked nose
  2. Cough
  3. Sore throat
  4. Headache
  5. Muscle pain (myalgia)
  6. Chest pain
  7. Stomach ache
  8. Diarrhoea
  9. Nausea
 10. Chills
 11. Water bloodshot eyes
 12. Feeling tired or exhausted
 13. Vomiting
 14. Loss of appetite
 15. Sneezing
 16. Colored sputum
 17. Shortness of breath
 18. Fever
 19. Dizzy
 20. Bloody nose or gengiva
 21. Red spots
 22. Loss of smell and taste
 23. Dry cough
 24. Cough with phlegm
s110 When did the symptoms start?
s111 Don't know the onset date
s120 Did the symptoms start abruptly   1. Fast symptoms onset
  2. No fast symptoms onset
s200 What was your highest measured temperature
s210 When did your fever start?
s220 Did your fever start abruptly (within 48 hrs)?   1. Fast fever onset
  2. No fast fever onset
s230 Did you measure your fever?   1. Yes
  2. No
s300 Did you go to a GP?   1. Yes
  2. No
  3. Family doctor
  4. Overnight at hospital
  5. Emergency room
  6. Scheduled
  7. Continuitá assistenziale (Guardia Medica) (it)
  8. Test location corona
s310 What was his/her diagnosis?
s320 Did you phone for medical help   1. Family doctor
  2. Centro de saude (pt)
  3. Saude 24 (pt)
  4. Continuitá assistenziale (Guardia Medica) (it)
  5. 118 (it)
  6. Family doctor receptionist
  7. NHS Direct/24/Choices (UK)
  8. National pandemic flu service (uk)
s330 How many days after start of symptoms did you visit doctor
s331 How many days after start of symptoms did you visit GP
s332 How many days after start of symptoms did you have hospital admission
s333 How many days after start of symptoms did you visit emergency room
s334 How many days after start of symptoms did you visit other medical service
s340 How many days after start of symptoms did you call doctor
s341 How many days after start of symptoms did you call receptionist
s342 How many days after start of symptoms did you call doctor
s343 How many days after start of symptoms did you call nhs
s344 How many days after start of symptoms did you call other
s400 Did you have to alter your daily routine?   1. Yes, I stayed at home
  2. Yes, but I went to work/ school
  3. No, I did everything as usual
  4. Yes, I had to stay in quarantaine
s410 If you had to stay at home, how long did you stay?
s420 Are still off school/work   1. Yes
  2. No
s500 Did you take any of the following drugs?   1. Antipyretics (against fever)
  2. Pain killers
  3. Expectorants (against cough)
  4. Antiviral - Tamiflu
  5. Antiviral - Relenza
  6. Antivirals
  7. Antibiotica
  8. Pain killers or anitpyrectics
s510 On which day did you start?
s520 How many days after start of symptoms did you start
s600 Did you get a vaccine now?   1. Yes
  2. No
s610 Did you get a H1N1pdm vaccine now?   1. Yes
  2. No
s700 Still the same symptoms as previous survey   1. Yes
  2. No
s750 Date symptoms stopped
s751 When did your symptoms stop?   1. Don't know, but stopped
  2. I'm still ill
s800 What do you think is causing your symptoms   1. I think Flu
  2. I think Cold
  3. I think Allergy
  4. I think Gastro
  5. I think Asthma
s900 How do you feel?
s1000 How many people with flu-like symptoms in your household last week
s1050 How many people with flu-like symptoms outside your household last week
s1100 Did you test for corona   1. Yes
  2. No
s1120 What was the result of the corona test   1. Positive for corona
  2. Negative for corona
sid_uid The survey id counted separately for each participant