The Influenza A virus subtypes that have been confirmed in humans, ordered by the number of known human pandemic deaths, are: 1  H1N1 caused Spanish Flu and the 2009 swine flu outbreak (novel H1N1) 2  H2N2 caused Asian Flu. 3  H3N2 caused Hong Kong Flu. 4  H5N1 is bird flu, endemic in avians. 5  H7N7 has unusual zoonotic potential.
Plug seal capsfeature one-piece linerless construction and. are designed for use in closed systems, providing a liquid-. and gas-tight seal. When loosened, this cap can also be used. in open systems. This cap design was a Corning innovation. that first appeared in 1974.
The truth is, your mucus plug may not be as exciting as you might think. The mucus plug is surprisingly, just what it sounds like. It is literally a thick glob of mucus that is formed as early as 7 weeks into the pregnancy and seals the cervix, which is the opening to the uterus. The plug is formed by the natural secretions in the cervix and serves as a natural barrier to your baby from injury or substances like bacteria.