Pfizer Inc. (NYSE:PFE) and mRNA vaccine specialist BioNTech SE (NSDQ:BNTX) will collaborate to develop an mRNA-based vaccine to prevent the herpes zoster virus (shingles). Roughly one million people in the U.S. get shingles each year, according to the CDC. Currently, the two-dose Shingrix shingles vaccine from GSK (NYSE:GSK) is the only such product available in the U.S. market.…