In the original article, there was a mistake in Supplementary Material Data Sheet 1 as published. In the tab “Australia” the value of cell M191 should be “0” instead of “1” and that of cell N191 should be “1” instead of “0.” The corrected Supplementary Material Data Sheet 1 has been replaced in the original article.
In addition, there was a mistake in Table 6 as published. The percentage of vaccine-negative websites for Australia should be “33.3%” instead of “16.7%.” The corrected Table 6 appears below.
Table 6.
Frequency of vaccine-negative webpages in each typology.
| google.com | UK | AUS | FR | IT | Man | Port | Ara | |
|---|---|---|---|---|---|---|---|---|
| Comm | 71.4 | 60.0 | 33.3 | 77.8 | 0.0 | 25.0 | 16.7 | 0.0 |
| Gov | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| HP | 0.0 | 0.0 | 16.7 | 0.0 | 12.5 | 27.8 | 7.1 | 0.0 |
| News | 6.8 | 7.0 | 2.0 | 0.0 | 2.1 | 12.1 | 7.3 | 3.9 |
| NP | 10.0 | 11.5 | 4.8 | 30.0 | 0.0 | 15.4 | 33.3 | 0.0 |
| Other | 34.0 | 40.0 | 39.7 | 30.8 | 30.6 | 29.8 | 56.4 | 15.8 |
| Prof | 7.7 | 7.7 | 5.0 | 7.1 | 0.0 | 10.0 | 17.4 | 0.0 |
| ScJ | 0.0 | 23.1 | 7.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Average vaccine-negative in the total search engine result page (SERP) | ||||||||
| 16.6 | 19.7 | 16.0 | 19.6 | 11.5 | 19.0 | 24.2 | 7.5 | |
Data indicate the percentage of vaccine-negative webpages in each typology. Cells are color coded to show difference from “expected” based on the frequency in the total SERP shown in the bottom row (red, above the expected frequency; green, below the expected frequency).
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.