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  1. Health & Medicine

    Twice bitten

    Repeat episodes of Lyme disease are more likely caused by a second tick bite rather than by a return of the original illness.

    By Brian Vastag
  2. Health & Medicine

    Ulcer bug may prevent asthma

    Children whose stomachs carry the bacterium Helicobacter pylori are at lower risk for asthma than children who don't have the bug.

    By Brian Vastag

  3. 19893

    “Antibiotics in infancy tied to asthma” (SN: 7/7/07, p. 14) reported a correlation but no confident explanation for the relationship between receiving antibiotics and later developing asthma. This article, which reports that children with Helicobacter pylori in their stomachs are less likely to get asthma, seems to offer a convincing answer.