 <td>influenza</td>
      <td>infants</td>
      <td>hadv</td>
      <td>aris</td>
      <td>inc.</td>
      <td>assays</td>
      <td>illness</td>
      <td>antibody</td>
      <td>ALRI</td>
      <td>recipients</td>
      <td>bacteria</td>
      <td>exacerbation</td>
      <td>RTI</td>
      <td>hcov-nl63</td>
    </tr>
    <tr>
      <th>4</th>
      <td>patients</td>
      <td>respiratory</td>
      <td>RSV</td>
      <td>species</td>
      <td>HPIV</td>
      <td>med</td>
      <td>culture</td>
      <