Results from PCR for cases identified during 2018 respiratory viral outbreak in Southern Province, Sri Lanka*
| Viral target | Passive surveillance n=231 | Active surveillance n=179 | Overall n=410 | ||||||
| <2 years n=136 | ≥2 and <5 years n=41 | ≥5 years n=40 | <2 years n=107 | ≥2 and <5 years n=41 | ≥5 years n=29 | <2 years n=243 | ≥2 and <5 years n=82 | ≥5 years n=69 | |
| MonoInfection | 63 (46.3) | 20 (48.8) | 16 (40.0) | 67 (62.6) | 25 (61.0) | 18 (62.1) | 130 (53.5) | 45 (54.9) | 34 (49.3) |
| Influenza A | 13 (9.6) | 8 (19.5) | 12 (30.0) | 10 (9.3) | 12 (29.3) | 6 (20.7) | 23 (9.5) | 20 (24.4) | 18 (26.1) |
| Influenza B† | 3 (2.2) | 1 (2.4) | 3 (7.5) | 0 | 0 | 0 | 3 (1.2) | 1 (1.2) | 3 (4.3) |
| AdV | 20 (14.7) | 4 (9.8) | 1 (2.5) | 31 (29.0) | 11 (26.8) | 10 (34.5) | 51 (21.0) | 15 (18.3) | 11 (15.9) |
| RSV | 27 (19.8) | 7 (17.1) | 0 | 26 (24.3) | 2 (4.9) | 2 (6.9) | 53 (21.8) | 9 (11.0) | 2 (2.9) |
| CoInfection | 14 (10.3) | 5 (12.2) | 2 (5.0) | 21 (19.6) | 6 (14.6) | 5 (17.2) | 35 (14.4) | 11 (13.4) | 7 (10.1) |
| Influenza A+AdV | 1 (0.7) | 0 | 0 | 6 (5.6) | 4 (9.8) | 3 (10.3) | 7 (2.9) | 4 (4.9) | 3 (4.3) |
| Influenza A+RSV | 4 (2.9) | 2 (4.9) | 1 (2.5) | 2 (1.9) | 1 (2.4) | 0 | 6 (2.5) | 3 (3.6) | 1 (1.4) |
| AdV+RSV | 6 (4.4) | 3 (7.3) | 0 | 12 (11.2) | 1 (2.4) | 1 (3.4) | 18 (7.4) | 4 (4.9) | 1 (1.4) |
| Other | 3 (2.2) | 0 | 1 (2.5) | 1 (0.9) | 0 | 1 (3.4) | 4 (1.6) | 0 | 2 (2.9) |
| Negative | 55 (40.4) | 13 (31.7) | 16 (40.0) | 19 (17.8) | 10 (24.4) | 6 (20.7) | 74 (30.4) | 23 (28.0) | 22 (31.9) |
| Not tested | 4 (2.9) | 3 (7.3) | 6 (15.0) | 0 | 0 | 0 | 4 (1.6) | 3 (3.6) | 6 (8.7) |
| Total positives | 77 (56.6) | 25 (61.0) | 18 (45.0) | 88 (82.2) | 31 (75.6) | 23 (79.3) | 165 (67.9) | 56 (68.3) | 41 (59.4) |
Frequency (%) are listed in the table by age group.
*Age missing for 16 patients.
†Testing only performed at Medical Research Institute, the national reference laboratory.
AdV, adenovirus; RSV, respiratory syncytial virus.