Before the Varicella Vaccine was licensed in the U.S. in 1995, there were approximately 100 deaths and more than 11,000 hospitalizations a year from chickenpox.
ກ່ອນທີ່ຈະສັກຢາປ້ອງກັນໂຣກ Varicella ໄດ້ຮັບອະນຸຍາດຢູ່ໃນສະຫະລັດໃນປີ 1995, ປະມານ 100 ຄົນໄດ້ເສຍຊີວິດແລະຫຼາຍກວ່າ 11.000 ຄົນໃນໂຮງຫມໍໃນປີນີ້ຈາກໂຣກຫມາກເບີດ.