The Hawaii Department of Health is informing parents through a media campaign that their soon-to-be seventh graders are required to receive several vaccines before their first day of school this fall. Students who are entering seventh grade must either present a yellow "Seventh Grade Student Immunization Record" card signed by their doctor or a note from a doctor explaining that the required vaccine is in short supply, officials said. Under the new requirements, all seventh graders must be vaccinated against hepatitis B, measles, mumps, rubella, and chickenpox before they start school, or they will be sent home. Health officials in the state hope that parents begin vaccinating their children before the summer, when the clinics will be packed with people.