How many genotypes does ASF have?

How many genotypes does ASF have?

Twenty-four genotypes of ASFV have been identified by sequencing the p72/B646L gene of the virus21,22. Most of these genotypes can be associated with particular geographical regions, especially in sub-Saharan Africa, where the virus almost certainly originated, and is endemic in wild suids23.

What type of virus is African swine fever?

What is african swine fever? African swine fever (ASF) is a highly contagious haemorrhagic viral disease of domestic and wild pigs, which is responsible for serious economic and production losses. It is caused by a large DNA virus of the Asfarviridae family, which also infects ticks of the genus Ornithodoros.

What is the vector of African swine fever?

The virus is highly stable and easily spreads by infected swine, contaminated pork products and fomites, or via transmission by the Ornithodoros vector. Competent Ornithodoros argasid soft tick vectors are known to exist not only in Africa, but also in parts of Europe and the Americas.

Is African swine fever an RNA virus?

African swine fever virus is a large enveloped double-stranded DNA virus that is the sole member of the genus Asfivirus within the family Asfarviridae (Asfar=African swine fever and related viruses). African swine fever virus is the only known DNA arbovirus and is transmitted by soft ticks of the genus Ornithodoros.

How is Asfv spread?

ASFV is therefore likely to transmit between wild boars by contact with infectious wild boars, infectious free-ranging pigs or carcases of infected pigs or wild boars improperly disposed of by farmers or hunters. However, it remains unclear whether ASFV can be sustained in these wild boar populations.

Is African swine fever virus airborne?

“African swine fever is transmitted through close contact. Unlike some of the diseases that we know that are aerosol and move great distances, this is close contact, nose-to-nose; bodily secretions can transmit it.

How is ASFV spread?

Is African swine fever virus enveloped?

African swine fever virus (ASFV) is a complex enveloped deoxyvirus with unique features among the DNA-containing viruses (9, 44). Large DNA viruses include families of icosahedral viruses (Herpesviridae and Iridoviridae) and brick-shaped viruses (Poxviridae).

How long can African swine fever virus survive?

EMPRES – Contingency Planning – African Swine Fever. ASF virus, in a suitable protein environment, is stable over a wide temperature and pH range. It has been shown to survive in serum at room temperature for 18 months, in refrigerated blood for 6 years, and in blood at 37°C for a month.

How do you control swine fever in pigs?

Controlling an outbreak quickly and efficiently

1. Culling animals on infected farms, followed by cleaning and disinfection.
2. Tracing possible contact farms, followed by quarantine or preventive culling.
3. Tightening biosecurity measures.
4. Transport ban on pigs and pork products.

How long does African swine fever virus survive?

How is swine fever transmitted?

ASF is spread by contact with infected animals’ body fluids. It can be spread by ticks that feed on infected animals. People are also a source of spread; as they can move the virus on vehicles or clothing.