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Table 2 Percentage of mortality, pigs with clinical signs and pigs received concomitant treatments throughout the study (95 % CI)

From: Production results from piglets vaccinated in a field study in Spain with a Type 1 Porcine Respiratory and Reproductive virus modified live vaccine

Parameter

Week Group 1 + 2 + 3

Week Group 1

Week Group 2

Week Group 3

Unvaccinated pigs

Vaccinated pigs

Unvaccinated pigs

Vaccinated pigs

Unvaccinated pigs

Vaccinated pigs

Unvaccinated pigs

Vaccinated pigs

Number of animals

674

690

214

224

226

230

234

236

Mortality (%)

6.1

4.9

5.1

3.6

5.8

4.8

7.3

6.4

(4.5–8.2)

(3.6–6.8)

(2.9–9.0)

(1.8–6.9)

(3.4–9.6)

(2.7–8.4)

(4.6–11.3)

(3.9–10.2)

Any clinical sign (%)†

8.3a

4.2b

7.0

3.6

6.2

3.0

11.5a

5.9b

(6.5–10.6)

(2.9–6.0)

(4.3–11.2)

(1.8–6.9)

(3.7–10.1)

(1.5–6.2)

(8.1–16.3)

(3.6–9.7)

Respiratory signs (%)

4.7a

2.3b

3.3

1.8

3.1

1.3

7.7

3.8‡

(3.4–6.6)

(1.4–3.7)

(1.6–6.6)

(0.7–4.5)

(1.5–6.3)

(0.4–3.8)

(4.9–11.8)

(2.0–7.1)

Skin alterations (%)

2.4a

0.7b

2.3

0.9

1.3

0.4

3.4

0.8

(1.5–3.8)

(0.3–1.7)

(1.0–5.4)

(0.3–3.2)

(0.5–3.8)

(0.8–2.4)

(1.7–6.6)

(0.2–3.0)

Concomitant treatments (%)

23.0a

18.6b

15.5

15.6

21.2a

12.2b

32.5

27.5

(20.0–26.3)

(15.8–21.6)

(10.4–19.8)

(11.5–21.0)

(16.4–27.0)

(8.6–17.0)

(26.8–38.7)

(22.2–33.6)

  1. 95 % CI: Wilson’s Confidence Interval 95 % for a single proportion
  2. † Respiratory signs and/or skin alterations and/or joint disorders and/or diarrhoea. Prevalence of joint disorders and diarrhoea was 1 % or lower
  3. a, b Within week group, different letter in the same row indicates statistically significant difference (p < 0.05). Differences between the treatment groups were tested by Fisher’s exact test