The Centers for Disease Control and Prevention says the salmonella outbreak that’s sickened more than 1,440 people appears to be over.  A joint probe by the CDC and the Food and Drug Administration has found strong evidence that jalapeno peppers were a major carrier of the bacteria, and that serrano peppers were also a carrier. The strain that caused the outbreak has been traced back to a produce distribution center in Texas, and to a Mexican farm that grew peppers.  The investigation hasn’t found any contaminated tomatoes. But investigators say they can’t rule out that tomatoes might have been a carrier, particularly early on.