11.   Mrs. Glaser tested positive, and doctors found she had passed the virus to Ariel through her breast milk.

12.   Ms. Rodriguez, it turned out, was also infected and had passed the virus to Gabby at birth.

13.   Recent research has shown that infected women can reduce their chances of passing the virus to their fetuses by taking the drug AZT.

14.   Several studies have shown that pregnant women, given a three-month course of AZT can be prevented from passing the virus on to their child.

15.   Since carrier mothers routinely pass the virus to their babies, it is not surprising that New York winds up with more than its share of acute cases.

16.   Surprisingly, the viruses are passed from bird to bird but cause no disease at all.

17.   The concern is that rabies-carrying coyotes will pass the virus, which is easily spread by bites, to dogs, which will in turn infect people.

18.   The tests may also be well-suited for pregnant women and newborns, since cases have been recorded of mothers passing resistant virus to babies.

19.   The tests also are well-suited for pregnant women and newborns, Thompson said, since cases have been recorded of mothers passing resistant virus to babies.

20.   The virus usually is passed from an infected person, who may not know he or she has anything more than a cold.