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Symptoms

Porcine reproductive and respiratory syndrome

Exercise 2 and 4

PSSR in general and vectors

About PSSR

In general

- first report in United States 1987

(now Asia, Africa, Europe)

- in 1992 added to the IOE list of reportable diseases

- young pigs are more affected than older

- high mortality

- outbreak can last up to 4 months

Vectors

- primary vectors: infected pig and contaminated semen

- aerosol (up to 9.1 km)

- contaminated needles, boots, transport vehicles, etc...

- experimental transport via insects (mosquitoes and house flies) has been reported

- people are not at risk, unless there is a blood contamination from viraemic pig

Symptoms

Reproductive failure

- infertility

- abortion

- stillbirths

- birth of weak piglets

Respiratory disease

Reproductive failure

Respiratory disease

- laboured breathing

- listlessness

- loss of apetite

- body discolaration

- blue ears

Other symptoms

- anorexia

- agalactia

- lower immunity

- fever

- secondary infections

Treatment of PSSR

Treatment

&

Prevention

- currently there arent any 100% effective threatment programs

- cure symptoms: fever (aspirin), appetite stimulants (vit. B), bacterial infection (ATB)

- mixed result

Prevention

- sanitation of transport vehicles

- protocols about personnel movement between farms

- proper isolation and acclimatization of new animals

- commercial vaccine (modified-live/killed)

- testing new animals on PSSR virus: PCR, virus isolation, fluid sampling

Outbreak

- strict quarantine, testing on PSSR

-depopulation with disinfection

- proper disposal of the carcasses

- vaccination

Prevention

2

Exercise 2 and 4

4

2

6

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