Table 4.
Examples of studies detecting a respiratory picornavirus in asymptomatic or control groups
| Study category (detection method; virus) | Other viruses detected in group | Frequency (%) |
|---|---|---|
| Birth cohort (PCR; PV) (Kusel et al., 2006) | HCoVs, HPIVs, HMPV, HRSV, HAdVs | 2 |
| Children/adults (PCR; PV) (Johnston et al., 1993b) | ND | 12/4 |
| Children (PCR; PV) (Winther et al., 2006) | ND | 19 |
| Adult (culture; HRV (Gwaltney et al., 1966) | IFVs, HPIVs, CVA-21, HRSV | 2 |
| Adult (culture; filterable agent) (Jackson and Dowling, 1959) | ND | 10 |
| Children (PCR; HRV) (Suvilehto et al., 2006) | ND | 61 |
| Children (culture; HRV) (Banham, 1965) | HPIV, HEVs, βHS, HAdVs | 2 |
| Adults (culture) (Hamre et al., 1966) | HCoV, HRSV, FLUBV, HPIVs, HAdVs | ≤5 |
| Children <2 years/2–16 years (PCR; HRV) (Rakes et al., 1999) | HRSV, HCoV-OC43, HAdVs | 41/36 |
| Children (PCR; PV) (Jartti et al., 2004a) | Not examined. | 10 |
| Children (culture) (Stott et al., 1969) | HRSV, HRV, HPIV, HSV, HAdV, HEV | 9 |
ND, not described; PV, respiratory picornavirus; βHS, β-haemolytic streptococci; FLUBV, influenza B virus; HAdVs, human adenoviruses; HCoV, human coronavirus; HMPV, human metapneumovirus; HPIV, human parainfluenzavirus; HRSV, human respiratory syncytial virus; HSV, Herpes simplex virus; IFV, influenza viruses not otherwise typed.