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| Entries | Events Sterilisation filters |
|---|---|
| Description | New sterilisation filters are a news event which affects the way a plague spreads from country to country. This may happen with airplanes or ships. Only advanced water or airborne diseases can avoid these filters. Air 1 for airplanes and Water 1 for boats must be acquired to avoid the filters. |
| View details | Sterilisation filters ↗ |
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