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Distribution of articles by outbreak.
| Outbreak | Number of article |
||
|---|---|---|---|
| Alone | Combination | Total | |
| Al-Hasa | 23 | 9 | 32 |
| Jeddah | 13 | 15 | 28 |
| Riyadh 2014 | 12 | 13 | 25 |
| Riyadh 2015 | 4 | 5 | 9 |
| Total | 52 | 42 | 94 |
Total of 94 arises from the sum of articles considering each outbreak alone and in combination with other outbreak(s), thus few of the 68 articles (Table 1) are counted more than once.
