Table 2.
Incidence of Respiratory Viral Infections
| All Patients (N = 1831) | Study Group |
P Valuea | |
|---|---|---|---|
| Premask (n = 920) | Mask (n = 911) | ||
| Any virus (excluding metapneumovirus) | 95 (10.3) | 40 (4.4) | <.001 |
| Influenza A | 5 (0.5) | 4 (0.4) | |
| Influenza B | 1 (0.1) | 1 (0.1) | |
| Parainfluenza (any) | 78 (8.5) | 22 (2.4) | <.001 |
| Parainfluenza 1 | 0 (0) | 1 (0.1) | |
| Parainfluenza 2 | 3 (0.3) | 1 (0.1) | |
| Parainfluenza 3 | 76 (8.3) | 20 (2.2) | <.001 |
| Adenovirus | 0 (0) | 5 (0.5) | |
| Respiratory syncytial virus | 16 (1.7) | 11 (1.2) | .35 |
| Allo-HSCT Patients (n = 667) | Study Group |
P Value | |
| Premask (n = 378) | Mask (n = 289) | ||
| Any virus (excluding metapneumovirus) | 64 (16.9) | 24 (8.3) | .001 |
| Influenza A | 4 (1.1) | 3 (1) | |
| Influenza B | 0 (0) | 0 (0) | |
| Parainfluenza (any) | 51 (13.5) | 14 (4.8) | <.001 |
| Adenovirus | 0 (0) | 3 (1) | |
| Respiratory syncytial virus | 14 (3.7) | 5 (1.7) | |
| Study Group |
|||
| Auto-HSCT Patients (n = 1164) | Premask (n = 542) | Mask (n = 622) | P Value |
| Any virus (excluding metapneumovirus) | 31 (5.7) | 16 (2.6) | .007 |
| Influenza A | 1 (0.2) | 1 (0.2) | |
| Influenza B | 1 (0.2) | 1 (0.2) | |
| Parainfluenza (any) | 27 (5) | 8 (1.3) | <.001 |
| Adenovirus | 0 (0) | 2 (0.3) | |
| Respiratory syncytial virus | 2 (0.4) | 6 (1) | |
Data are presented as No. (%).
Abbreviations: allo-HSCT, allogeneic hematopoietic stem cell transplant; auto-HSCT, autologous hematopoietic stem cell transplant.
a χ2 test.