o State-supplied vaccines for children, such as DTaP (diphtheria, tetanus, pertussis) and varicella (chickenpox), are free through the Childhood Vaccine Program, though an administration fee may be charged. No child in the state can be denied a state-supplied vaccine because of inability to pay the administration fee.

o The Free Clinic of Southwest Washington holds vaccination clinics without administration fees for uninsured children on the first and third Wednesdays of each month. The walk-in clinics are 5:30 to 7:30 p.m. at 4100 Plomondon St., Vancouver. Sign-in begins at 5 p.m. Parents need to bring their child’s immunization records, if they have them.

Public health officials are urging immunizations as several vaccine-preventable diseases make a resurgence in Clark County and across the state.

So far this year, 52 cases of whooping cough, or pertussis, have been reported in Clark County — more than three times the number reported at this time last year. Statewide, 319 cases of whooping cough have been reported this year.

Health officials are also seeing increasing numbers of chickenpox cases at local schools. Chickenpox cases are not required to be reported to health officials, unlike whooping cough, but Clark County Public Health typically hears when case numbers are rising, said Dr. Alan Melnick, public health director and county health officer.