Table 1 Acute respiratory tract episodes divided into localisation and type (with the corresponding ICPC codes)

Labelled as symptom:

Labelled as infection:

Upper respiratory tract:

Upper respiratory tract:

R07 sneezing/nasal congestion

R72 strep throat

R09 sinus symptom/complaint

R74 acute upper respiratory infection

R21 throat symptom/complaint

R75 sinusitis acute/chronic

R22 tonsils symptom/complaint

R76 acute tonsillitis

H01 ear pain/earache

H71 acute otitis media/myringitis

Lower respiratory tract:

Lower respiratory tract:

R05 cough

R77 acute laryngitis/tracheitis