Tomato flu, which medical experts say is not considered life-threatening, gets its name from the painful red blisters that enlarge to the size of a tomato.
If successful, the vaccine would be the first against Lyme disease in the United States since Lymerix, which was discontinued in 2002 because of poor sales.
The funds will support public health and climate adaption, Gates said, as he reduces his fortune so he is no longer among the world’s wealthiest people.