Within one month of hire, all employees will be required to provide evidence of immunity or receive immunizations for vaccine-preventable illnesses for any position within the Maricopa County Department of Public Health; required immunizations include MMR (measles, mumps, rubella), Tdap (whooping cough and diphtheria), Varicella (chickenpox), and annual Influenza; some positions require a Hepatitis B vaccine and/or a Tuberculosis test. Work will occur in an office and field environment and may be subjected to extreme temperatures, wetness, humidity, respiratory hazards, noise, vibration, noxious odors, fumes, dust, mists, gases, poor ventilation, unsanitary conditions, chemicals, electricity, moving mechanical parts, varying weather conditions, and other related conditions and situations.