| NOUN | state | VHF, hemorrhagic fever, haemorrhagic fever, viral hemorrhagic fever, viral haemorrhagic fever | a group of illnesses caused by a viral infection (usually restricted to a specific geographic area) |
|---|---|---|---|
| attribute | VHF, very high frequency | 30 to 300 megahertz |
| Meaning | A group of illnesses caused by a viral infection (usually restricted to a specific geographic area); fever and gastrointestinal symptoms are followed by capillary hemorrhage. | |
|---|---|---|
| Synonyms | hemorrhagic fever, haemorrhagic fever, viral hemorrhagic fever, viral haemorrhagic fever | |
| Narrower | Argentine hemorrhagic fever | hemorrhagic fever with neurological signs |
| Crimea-Congo hemorrhagic fever | An infection common in Arab states caused by a bunyavirus | |
| Ebola hemorrhagic fever, Ebola fever, Ebola | A severe and often fatal disease in humans and nonhuman primates (monkeys and chimpanzees) caused by the Ebola virus | |
| Lassa fever | An acute contagious viral disease of central western Africa | |
| Marburg disease, Marburg hemorrhagic fever, green monkey disease | A viral disease of green monkeys caused by the Marburg virus | |
| Rift Valley fever | An infection common in Africa caused by a bunyavirus | |
| Broader | viral infection, virus infection | infection by a virus that is pathogenic to humans |
| Meaning | 30 to 300 megahertz. | |
|---|---|---|
| Synonym | very high frequency | |
| Part of | electromagnetic spectrum | The entire frequency range of electromagnetic waves |
| Broader | radio frequency | An electromagnetic wave frequency between audio and infrared |
| Spanish | muy alta frecuencia, vhf, VHF | |
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