After 1855, when it (plague) reappeared again, there were once again similar weather conditions. |
Many, many bird species are spreading bacteria from one place to another, from one rodent to another, by carrying fleas, |
That birds spread the bacteria is not in question but how important that is in the big picture is not yet clear. |
The link is very important and it is also important to link it back to the Black Death in the 1300s because there were the kind of weather conditions then -- warmer and wetter -- that we predict for the future, |