You should look at web sources that have recently been updated because a lot of times new information is present that could change the original point/evidence. This could discredit the source. You also should do this because the newer the information, the more credible it is in the time (older information could easily be outdated).
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It was in the late 1960's.
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It was tranferred through mosquitos (like malaria) and was in the United States.
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Same I also need help with the answers
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