The date for exclusion of students in Oregon schools who are not up to date on their immunizations is Wednesday, February 21. Trish Elliott of the Hood River County Health Department says schools will be delivering their immunization record reports to the health department by next Wednesday, and then notification letters will go out. She adds there are a couple of vaccines in particular that are the most likely to be missed: Varicella and adolescent T-DAP. Day care centers and pre-school programs are also subject to the state’s immunization requirements.