Smallpox, a deadly disease which is belived to have been eradicated, was initially thought to have been spread through the air. Today, we know that it is actually spread through
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By blood products (unclean needles or unscreened blood).
By airborne respiratory droplets (coughs or sneezes).
By skin-to-skin contact (handshakes or hugs).
By saliva (kissing or shared drinks).
By touching a contaminated surface (blanket or doorknob
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