| the blood | 0.16 |
| cause birth defects | 0.43 |
| cross the placenta | 0.36 |
| cause mild illness | 0.34 |
| infect gsc | 0.33 |
| spread in the americas | 0.29 |
| stop macrophage | 0.28 |
| infect people | 0.28 |
| make headline | 0.27 |
| target neuroprogenitor … | 0.26 |
| cross the blood-brain b… | 0.25 |
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| microcephaly | 0.50 |
| rash | 0.22 |
| fever | 0.20 |
| stillbirth | 0.16 |
| spread by mosquito | 0.68 |
| discovered in 1947 | 0.57 |
| transmitted by aedes mo… | 0.47 |
| identified in uganda | 0.45 |
| transmitted | 0.45 |
| identified in monkey | 0.40 |
| spread to people | 0.34 |
| reported in twenty sixt… | 0.25 |
| passed to another | 0.25 |
| discovered | 0.25 |
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| the dengue | 0.33 |
| yellow fever | 0.32 |
| west nile viruses | 0.31 |
| japanese encephalitis | 0.29 |