



Checking the quality of vaccine Covivac (Photo: VNA)

The vaccine is produced at a modern vaccine production facility in Cam Lam district, Khanh Hoa province. (Photo: VNA)

Covivac is produced under egg-based vaccine production technology by a group of researchers from Institute of Vaccines and Medical Biologicals at a vaccine production facility in Cam Lam district, Khanh Hoa province. (Photo: VNA)

Eggs are carefully selected from a French breed of chicken as they are large, uniform and has a white shell, which make them easy to observe the culture of NDV-Lasota-S virus. (Photo: VNA)

Parent chicken are free from antibiotics and bred in a hygienic environment where diseases are strictly controlled so that they can release high-quality eggs serving the study of Covivac. (Photo: VNA)