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Abbreviations
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Virus Name: Usutu

Abbreviation: USUV

Status
Possible Arbovirus

Select Agent
No

SALS Level
2

SALS Basis
Results of SALS surveys and information from the Catalogue.

Other Information

Antigenic Group
B

Section V - Antigenic Relationship and Lack of Relationship to Other Viruses

	USU Antigen	USU HIAF
Antigens or HIAF	CF (1)	CF (1)


CF: results expressed as quotient of homologous/heterologous titers
Bagaza	8	8
Ntaya	32	16
West Nile	8	2
Koutango	8	8
Banzi	>256	16
Uganda S	64	64
Bouboui	64	16
Saboya	>128	32
Spondweni	>1024	16
Zika	32	64
Wesselsbron	32	32
Dengue 1	64	32
Yellow fever	>128	64
Dakar bat	>64	64

In cross PRNT with 42 flaviviruses, USU virus reacted only with 4 viruses as follows [2] :

	USU Virus	USU Antibody
Viruses orAntisera	PRNT	PRNT


PRNT: results = homologous/heterologous titers
Japanese Enc.	320/160	40/<20
Murray Valley Enc.	80/80	40/320
West Nile	1280/80	40/40
Alfuy	40/<20	40/80

USU virus is a member of the West Nile serological subgroup [2] , [3] .

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