Table 2. .
Total Number of Respiratory Coinfections and Clinical Syndromes Identified in HES and SGSS 30 Days Before and After Each Included Pertussis Case (Infants ≤60 Days Old) Was Sent to the Hospital for Pertussis Between 1 September 2014 and 31 March 2016 and from 1 September 2016 to 31 March 2018 in England
| Coinfection | ICD-10 Code(s) | Total Codes in HES/SGSS/GP | Cumulative Frequency, % |
|---|---|---|---|
| Acute bronchiolitis | J219, J218 | 45 | 38.5 |
| Acute upper respiratory infection / nasopharyngitis | J069, J00X | 14 | 12.0 |
| Pneumonia | J181, P239, J22X, J189, J209, J180 | 11 | 9.4 |
| Respiratory syncytial virus | J210, B974 | 12 | 10.3 |
| Rhinovirusa | n/aa | 8 | 6.8 |
| Viral infections | B349, B348 | 7 | 6.0 |
| Enterovirus, unspecified | B971, B341 | 5 | 4.3 |
| Streptococcus | B995, J13X, B953 | 4 | 3.4 |
| Coronavirus | B972 | 3 | 2.6 |
| Influenza | J101 | 3 | 2.6 |
| Haemophilus influenzae infection | A492 | 2 | 1.7 |
| Adenovirus infection, unspecified | B340 | 2 | 1.7 |
| Human metapneumovirus | J211 | 1 | 0.9 |
| Total | 117 | 100.0 |
Abbreviations: GP, general practitioner; HES, Hospital Episode Statistics; ICD-10, International Classification of Diseases, 10th revision; n/a, not applicable; SGSS, Second Generation Surveillance System.
aRhinovirus was only determined in the SGSS database. Some cases of enterovirus, unspecified, may be rhinovirus.