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Table 2 Prevalence of viral genome detection by qPCR in nasopharyngeal swabs and tracheal washes

From: Multiple molecular detection of respiratory viruses and associated signs of airway inflammation in racehorses

Virus

Overall prevalence (95% CI)

‘Positive’ samples

‘Quantifiable’ samples

NS

TW

NS

TW

EHV-5

90.9%

(88.9–92.6)

55.4%

(52.3–58.5)

58.7%

(55.6–61.8)

19.1%

(16.7–21.7)

EHV-2

76.4%

(73.6–79.0)

35.4%

(32.4–38.5)

47.7%

(44.6–50.8)

14.6%

(12.5–16.9)

ERBV

7.8%

(6.2–9.6)

7.8%

(6.2–9.6)

2.1%

(1.3–3.2)

2.9%

(2.0–4.1)

EHV-4

6.0%

(4.6–7.7)

3.8%

(2.7–5.2)

1.5%

(0.8–2.5)

1.5%

(0.8–2.5)

EAdV1

3.6%

(2.5–4.9)

1.9%

(1.1–3.0)

0.2%

(0.0–0.7)

neg.

EHV-1

1.9%

(1.1–3.0)

0.2%

(0.0–0.7)

0.2%

(0.0–0.7)

neg.

ERAV

neg.

0.2%

(0.0–0.7)

neg.

0.2%

(0.0–0.7)

EAdV2

neg.

neg.

neg.

neg.

ECoV

neg.

neg.

neg.

neg.

EIV

neg.

neg.

neg.

neg.

  1. NS nasopharyngeal swab, TW tracheal wash, EHV equid herpesvirus, ERAV equine rhinitis virus A, ERBV equine rhinitis virus B, EAdV equine adenovirus, ECoV equine coronavirus, EIV equine influenza virus, neg. negative