Her skal det fremhæves, at denne type transmission er dokumenteret i 3 tilfælde ud af over 40 millioner doser levende skoldkoppevaccine (Oka/ Merck) anvendt til vaccination.
In particular, this kind of transmission has been documented 3 times out of more than 40 million doses of Varicella Vaccine live (Oka/ Merck) that have been distributed.