by Elana Gotkine Two doses of recombinant zoster vaccine (RZV) are effective against herpes zoster (HZ), with the vaccine effectiveness (VE) of two doses waning a little over four years of follow-up, according to a study published online on Jan. 9 in the Annals of Internal Medicine. Ousseny Zerbo, Ph.D., from Kaiser Permanente Northern California...
