Sentence examples for has not circulated from inspiring English sources
The strain has not circulated in humans since 1968, so much of the global population has no immunity to the strain.
"The virus has not circulated within airplanes to a wide number of people within airplanes and we have no reason to believe that it is circulating in airports," Dr. Heymann said.
Workers with access to natural light and fresh air that has not circulated endlessly through a building's air-conditioning system seem to get ill less often and avoid symptoms of "sick-building syndrome" associated with the sealed towers built in the 1970s, when energy costs were high.Building green is more expensive.
So far, the H5N1 influenza subtype has not circulated in the human population.
The isolate was assigned to the ST-7, a genotype that has not circulated in Burkina Faso since 2003.
Because WPV2 has not circulated anywhere globally since 1999, immunity to PV type 2 is not being stimulated through virus circulation.
Every branch gets a printout of the data each month, including every title that hasn't circulated in the previous 24 months.
But he said his agency had not circulated them or updated them for the nuclear threat or issued public warnings or organized any drills.
Other officials said tests of air filters showed that the poison lacked floating properties and had not circulated through ventilation systems.
Tommy Davis told me, "People started calling me, saying, 'What's this letter Paul sent you?' " The resignation letter had not circulated widely, but if it became public it would likely cause problems for the church.
