In the Cutter incident, thousands were accidentally exposed to this virus.
In 2002, Eckard Wimmer synthesized this virus's tiny 7,700-base pair genome from scratch, making it the first synthetic organism. Karl Landsteiner, the discoverer of blood groups, also discovered this virus. In the Cutter incident, thousands were accidentally exposed to this virus. SV40 was discovered contaminating cultures of this positive-sense RNA virus. HeLa  (HEE-lah)  cells were first used to culture this virus in preparation for a massive (*)  1952 clinical trial. This virus attacks the anterior horn of the spinal cord, so sufferers of it were forced into iron lungs. This virus was attenuated, not inactivated, in an improved 1961 treatment delivered orally. For 10 points, name this virus that has been nearly eradicated by vaccines developed by Albert Sabin and Jonas Salk.
In 2002, Eckard Wimmer synthesized this virus's tiny 7,700-base pair genome from scratch, making it the first synthetic organism.
polio virus