The new vaccine could arrive too late, not reach enough people, or not defend
against the circulating virus for the following reasons:
Not exact matches
For example, people who were born before the mid-1950s (when H1N1 stopped
circulating) showed a better defense
against the recent H1N1
virus.
Both drift and shift make these proteins unrecognizable to the antibodies present in people that were previously inoculated
against the flu
virus, which now
circulates as more than 90 strains.
«It was not known whether any of these vaccines could provide protection
against the new outbreak West African Makona strain of Ebola Zaire currently
circulating in Guinea,» said John Eldridge, Chief Scientific Officer - Vaccines at Profectus Biosciences, Inc. «Our findings show that our candidate vaccines provided complete, single dose protection from a lethal amount of the Makona strain of Ebola
virus.»
A small number of people infected with HIV produce antibodies with an amazing effect: Not only are the antibodies directed
against the own
virus strain, but also
against different sub-types of HIV that
circulate worldwide.
Oral polio vaccination will continue, but it will use a vaccine that protects
against just the two other types of polio
virus that are still
circulating in their wild form in Nigeria, Pakistan and Afghanistan.
A major goal of HIV - 1 vaccine development is to identify immunogens capable of inducing protective titers of broadly neutralizing antibodies (bNAbs)
against circulating, neutralization - resistant (tier 2)
viruses.
The other remedy I recommend has been shown to have activity
against both Influenza A & B. Remember, during any given flu season, the
circulating flu
virus could be predominantly one or the other.
The new bivalent vaccine helps protect dogs
against the two strains of the
virus known to be
circulating in the U.S., CIV H3N2 and CIV H3N8.
«Pfizer Animal Health is committed to monitoring swine influenza
viruses and bringing to the market vaccines that help protect
against SIV strains
circulating in pork production systems today,» said Kuhn.
The measles
virus component helps provide heterotypic immunity
against CDV in puppies regardless of
circulating CDV antibody levels.
If there is any amount of titer, then there are
circulating antibodies
against the parvo or distemper
virus.
The flu vaccine protects
against the three influenza
viruses that are expected to be most prevalent each season, but there can be other flu
viruses circulating as well.
It is up to each website user in particular to take all appropriate steps to protect his / her own data and / or software
against contamination by any
viruses circulating on the Internet.