| pregnant healthcare workers and covid 19 | 0.17 | 0.2 | 7252 | 40 | 33 |
| healthcare workers and covid 19 | 0.12 | 0.6 | 9029 | 31 | 85 |
| covid 19 and health care workers | 0.31 | 0.4 | 6690 | 32 | 89 |
| health care workers during covid 19 | 1.88 | 0.9 | 3540 | 35 | 39 |
| covid 19 health workers | 1.92 | 0.7 | 5876 | 23 | 100 |
| cdc covid 19 healthcare workers | 0.72 | 0.4 | 5237 | 31 | 12 |
| covid 19 policy for healthcare workers | 0.32 | 0.9 | 5014 | 38 | 25 |
| pregnancy and covid 19 government advice | 1.73 | 1 | 2723 | 40 | 97 |
| pregnant women and covid 19 | 1.83 | 0.6 | 1991 | 27 | 30 |
| healthcare workers affected by covid 19 | 0.17 | 0.2 | 7567 | 39 | 45 |
| covid 19 guidelines for healthcare workers | 0.88 | 0.2 | 8901 | 42 | 58 |
| pregnant and covid in the workplace | 1.15 | 0.4 | 1067 | 35 | 50 |
| pregnancy and covid 19 | 1.13 | 1 | 1660 | 22 | 78 |
| covid advice for pregnant workers | 0.39 | 0.8 | 7363 | 33 | 30 |
| pregnancy and covid in the workplace | 0.8 | 0.8 | 4599 | 36 | 81 |
| covid-19 and pregnancy cdc | 1.18 | 0.8 | 7205 | 26 | 85 |
| female doctor pregnancy covid-19 | 1.36 | 0.4 | 4009 | 32 | 30 |
