Chickenpox is a highly contagious disease caused by the varicella zoster virus (VZV).
Nature, Published online: 24 February 2026; doi:10.1038/d41586-026-00514-y
，更多细节参见WPS官方版本下载
Медведев вышел в финал турнира в Дубае17:59。快连下载安装对此有专业解读
A catch-up programme will offer one or two doses to older children, depending on their date of birth:
Фото: Toby Melville / Reuters