gnidrologs (gnidrologs) rakstīja, @ 2022-01-26 08:16:00 |
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"The risk increased with the number of doses that the dams had received, researchers found. Cows that had received at least three doses had 30 times the odds of having a calf with the illness, and those had received at least five doses had a risk more than 40 times as high."
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"The risk also increased steadily with time - it was far higher in calves whose dams had received the vaccine years insread of months earlier."