BOSTON - Early tests of a vaccine for West Nile virus are promising, a Cambridge biotech company said Wednesday. Dr. Thomas Monath, chief scientist at vaccine developer Acambis, said the new vaccine produced enough antibodies to fight off the sometimes deadly disease in all but one of the 60 people who were vaccinated.It’s far too early to know if the vaccine will ultimately work, but a federal health official said these first results were a good sign.
