Is polio vaccine still made from monkeys?
A 1989 letter from Japanese researchers to the journal AIDS noting that most live oral polio vaccines worldwide are still made in kidney-cell cultures from African green monkeys.
Can you be tested for SV40?
It has been noted that different strains of SV40 may not be readily identified by in vitro culture methods. However, as implemented by manufacturers, the assays have been shown to be highly sensitive and able to detect a variety of SV40 virus strains whose growth properties were predicted to differ (12).
How many people infected with SV40?
Infectious SV40 survived the vaccine inactivation treatments, and conservative estimates indicate that up to 30 million people (children and adults) in the United States may have been exposed to live SV40 from 1955 through 1963 when administered potentially contaminated polio vaccines (95, 111).
Is there a role for SV40 in human cancer?
Although many people may have been exposed to SV40 by polio vaccination, there is inadequate evidence to support widespread SV40 infection in the population, increased tumor incidence in those individuals who received contaminated vaccine, or a direct role for SV40 in human cancer.
How many proteins are produced during the first stage of SV40 infection cycle?
During the initial phase of the infection, generally the first 4 weeks, approximately 0.1% of the cells produce 500 to 1,000 virions per cell.
How do you get SV40?
SV40 sequences have been found, mainly by PCR methods, in different human cancers including mesothelioma, osteosarcoma, and non-Hodgkin’s lymphoma and some different lymphoproliferative disorders, a variety of childhood brain tumors such as ependymoma and choroid plexus tumors, as well as thyroid, pituitary and parotid …
What does a smallpox scar look like?
A smallpox vaccine scar is a distinctive mark that smallpox vaccination leaves behind. The scar may be round or oblong, and it may appear deeper than the surrounding skin. Usually, the scar is smaller than the diameter of a pencil eraser, though it can be larger.
How do you get Guillain-Barré syndrome?
Infection with Campylobacter jejuni, which causes diarrhea, is one of the most common risk factors for GBS. People also can develop GBS after some other infections, such as flu, cytomegalovirus, Epstein Barr virus, and Zika virus.