Varicella zoster virus (Oka/ Merck) vivum, attenuatum ≥ 19 400 PFU * * PFU = Plaque- forming units
Varicella-zoster-virus, Oka/ Merck stam, (levend, verzwakt) ≥ 19.400 PFU* *PFU = plaquevormende eenheden (“ plaque forming units)