Fig. 4.
Assessment of the clinical signs in immunized sheep after infection with virulent BTV. a Challenge 7 days after vaccination. b Challenge 90 days after vaccination. c Challenge 270 days after vaccination. d Challenge 360 days after vaccination. VG1 vaccinated group infected with virulent BTV-4. (n = 30) VG2 vaccinated group infected with virulent BTV-16. (n = 30). UnVG1 unvaccinated group infected with virulent BTV-4. (n = 4). UnVG2 unvaccinated group infected with virulent BTV-16. (n = 4). Data are means ± standard errors; ****Р < 0.0001