And though most scientists hail vaccines as one of public health’s greatest achievements, they have provoked fear, distrust, and contentious resistance since Edward Jenner invented the first vaccine, to prevent smallpox, in the late 1700s.
"She smashed it," he noted.
。搜狗输入法2026对此有专业解读
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19:06, 27 февраля 2026Мир