An innovative way was an improvised vaccination.
This consisted of smearing open cuts of healthy people with substances taken from wounds of sick people (for example sick from smallpox) in the hope that they will undergo a mild version of the disease and when the disease catches them, not die.
The risk was that they could get seriously ill, but the advantage was that on average, they had better survival chances than without this "vaccine"
The Gettysburg Address is a speech delivered by Abraham Lincoln at the November 19, 1863, dedication of Soldier's National Cemetery, a cemetery for Union soldiers killed at the Battle Of Gettysburg during the American Civil War. ... Everett spoke for two hours, from memory, before Lincoln took the podium.