Post-weaning Multisystemic Wasting Syndrome (PMWS)

The GB quarterly percentage of relevant diagnostic submissions with a diagnosis of PMWS for 2010 (3.73 per cent) was marginally elevated compared to the same quarter last year (3.68 per cent; see histogram figure 3 below). This is also an increase on the Q1 rate for 2010, which was 2.91 per cent. The Q2 rate is however a significant decrease from the peak Q2 rate in 2002, which was 26.01 per cent.

Figure 3. Diagnostic rates for PMWS for second quarters of each year 2002–2010

By application of a 'z test' the changes in percentage of diagnoses of PMWS made in the current quarter compared to a pool of the previous five comparable quarters show a statistically significant decrease (see figure 4).

Figure 4. Histogram to show the age groups affected with PMWS in Q2 2010 and the mean 2005 to 2009

Porcine Dermatitis and Nephropathy Syndrome (PDNS)

Cases of PDNS remained low this quarter (1.92 per cent) continuing the low level that has established recently following a downward trend between 2005 and 2008.

Figure 5. Diagnostic rates for PDNS for second quarters of each year 2002–2010

Porcine Circovirus Associated Disease (PCVAD)

A review of submissions received between 1 March and 30 June 2010 with a diagnosis of PMWS, PDNS and PCV2-associated pneumonia identified 10 new cases.

Further Reading

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You can view the Quarterly Surveillance report by clicking here.

Further Reading

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Find out more information on PMWS by clicking here.