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| ToxicOrganism | 68 | The Class of Organisms which are poisonous to other Organisms. | ^ |
| Virus | 52 | 这是一种由一层蛋白质保护层包围的单个核酸核心所组成的 Organism。 病毒这可能在它宿的活细胞内复制，它只表现有一些、而不是生物常见的所有特征。 | ^ |
| ViralAgent | 32 | BiologicalAgents that are also a Virus. | ^ |
| YellowFeverVirus | . | A Virus that can result in chills, fever, stomach bleeding, and YellowSkin. | ^ |
| FootAndMouthVirus | . | A Virus that is smaller than YellowFeverVirus. | ^ |
| EbolaVirus | . | A Virus that causes a form of hemorrhagic fever. | ^ |
| MonkeypoxVirus | . | The Virus that causes Monkeypox. | ^ |
| VariolaMajor | . | A Virus that causes Smallpox. Also known as the smallpox virus. | ^ |
| VariolaMinor | . | A Virus that causes Smallpox. Also known as Alastrim. | ^ |
| HIVVirus | . | The Virus that causes AcquiredImmunoDeficiencySyndrome. | ^ |
| Myxomatosis | . | A Virus that is infectious to rabbits and may cause blindness and death in these Rodents. | ^ |
| VenezuelanEquineEncephalitisVirus | . | The Virus that causes VenezuelanEquineEncephalitis. | ^ |
| HerpesVirus | 1 | The family of ViralAgent that includes various kinds of herpes simplex virus including HerpesBVir... | ^ |
| WestNileVirus | . | A flavivirus that causes WestNileFever. | ^ |
| DengueFeverVirus | . | Any of four related but distinct virus serotypes that are carried by the Aedes Aegypti mosquito and... | ^ |
| LaCrosseVirus | . | The Virus that causes LaCrossEncephalitis. It is carried by the Aedes Triseriatus mosquito, as ... | ^ |
| SaintLouisEncephalitisVirus | . | The Virus that causes SaintLouisEncephalitis. Mosquitoes carry this virus, which is then tran... | ^ |
| EasternEquineEncephalitisVirus | . | The Virus that causes EasternEquineEncephalitis. Mosquitoes carry this virus, which is then tra... | ^ |
| JapaneseEncephalitisVirus | . | The Virus that causes JapaneseEncephalitis. Mosquitoes in agricultural areas of Asia carry this... | ^ |
| MarburgVirus | . | The Virus that causes MarburgDisease. | ^ |
| HepatitisVirus | 3 | Viruses that cause Hepatitis. | ^ |
| Rotavirus | . | There are three types of Rotavirus: Group A, Group B, and Group C. They cause an acute form of ga... | ^ |
| LassaVirus | . | The Virus that causes LassaFever. | ^ |
| CrimeanCongoHemorrhagicFeverVirus | . | The Virus that causes CrimeanCongoHemorrhagicFever. | ^ |
| JuninVirus | . | This Virus derives its name from the Junin area of Argentina, where occurrences have so far been ... | ^ |
| MachupoVirus | . | The Virus that causes BolivianHemorrhagicFever. | ^ |
| GuanaritoVirus | . | The Virus that causes VenezuelanHemorrhagicFever. | ^ |
| SabiaVirus | . | The Virus that causes BrazilianHemorrhagicFever. | ^ |
| FlexalVirus | . | A Virus that that is responsible for a hemorrhagic fever found in South America. | ^ |
| HendraVirus | . | A Virus found in Australia and Papua New Guinea that infects humans and horses. The natural host ... | ^ |
| NipahVirus | . | Closely related to HendraVirus. Like the HendraVirus, the natural host of NipahVirus appears ... | ^ |
