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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