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CNN has a current story stating that Dr. Anthony Fauci has raised concerns about the less than 100% efficacy of the vaccines that have been developed, to date.
However, given the number of Covid-19 vaccines that have shown initial safety and efficacy potential, one possibility that may be explored is a "combination vaccine," which would in effect be "two vaccines in one."
This, from the CDC website:
"Combination vaccines reduce the number of shots your child needs while protecting against the same number of serious diseases."
Common combination vaccines for children
Pediarix DTaP + Hep B + IPV 5 diseases
(Diphtheria, tetanus, pertussis, hepatitis B, and polio)
ProQuad MMR + varicella (chickenpox) 4 diseases
(measles, mumps, rubella, and varicella)
Kinrix DTaP + IPV 4 diseases
(Diphtheria, tetanus, pertussis, and polio)
Pentacel DTaP + IPV + Hib 5 diseases
(Diphtheria, tetanus, pertussis, polio, and Hib (Haemophilus influenzae type b))
https://www.cdc.gov/vaccines/parents/why...cines.html
There is also ample precedent for a single injection that offers three different vaccines in one - - protecting against multiple strains of the same disease:
Trivalent IPV (three strains of inactivated polio vaccine)
https://www.cdc.gov/vaccinesafety/concer...unity.html
This type of approach would help to offset the concern that Dr. Fauci raised in his CNN interview about the partial, rather than 100% efficacy of the Covid-19 vaccines that he has reviewed to date, although it should be noted that
Dr. Fauci did say that he would be comfortable with the idea of approving a vaccine with only 70% to 75% efficacy.
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There are multiple indicators that the timetable for getting a vaccine adequately tested and approved for use in general population samples may be improving.
The first important indicator of an improving timetable was Dr. Fauci's optimistic statement, last week, that he could envision a Covid-19 vaccine being approved and ready for administration by early January.