Why has polio returned to the United States?
The discovery of a vaccine in the 1950s eradicated the deadly disease almost entirely. But now it’s back, spreading in London, Jerusalem and New York for the first time in decades. - REUTERS
The discovery of a vaccine in the 1950s eradicated the deadly disease almost entirely. But now it’s back, spreading in London, Jerusalem and New York for the first time in decades. - REUTERS