2) Procedures to apply for a Seamanâs Record Book (SRB), sometimes. referred to as a Discharge Book or Continuous Discharge Certificate (CDC) that records the onboard record of employment. 1.3 This Bulletin should be read in conjunction the BMA Information Bulletins.
That raises to total count to 67 cases. In the United States, the current recommended measles regimen is to give children a first dose of vaccine at 12 to 15 months of age, and a second dose at 4 to 6 years of age. But that wasn't the case in the 1960s, 1970s and during much of the 1980s.
Top of Page. Measles can be prevented with the MMR (measles, mumps, and rubella) vaccine. One dose of MMR vaccine is about 93% effective at preventing measles if exposed to the virus, and two doses are about 97% effective.In the United States, widespread use of measles vaccine has led to a greater than 99% reduction in measles cases compared with the pre-vaccine era.ne dose of MMR vaccine is about 93% effective at preventing measles if exposed to the virus, and two doses are about 97% effective. In the United States, widespread use of measles vaccine has led to a greater than 99% reduction in measles cases compared with the pre-vaccine era.