Health officials say they now have 35 measles cases in the Clark County outbreak and are treating 11 more suspected cases of infection.
Officials say 31 of the infected have not been immunized, while four others have not been confirmed had the vaccine.
Washington State legislators introduced a bill on Friday to remove personal exceptions to the measles vaccine.
State Secretary Paul Harris (R-Vancouver) sponsors the bill, saying that the bill will be exempted from personal exemption. However, religious and health exemptions remain.
The date for hearing the bill has not yet been determined.
Most confirmed cases are children under the age of 1
Those who were infected visited several public places while they were contagious. Officials say one of the youngest people has confirmed that the infection has visited the Oregon Museum of Science and Industry (OMSI) and several businesses, such as Walmart and Trader Joe's in Vancouver. (full list of sites and exposure times below)
Measles symptoms start with a mild fever, cough, runny nose and red eyes, followed by a rash.
"Measles can be so contagious that you can use it in a room, and if you are prone, two hours after someone has gone through with measles, and still get the disease," Dr. Alan Melnick, director of public health for Clark County.
If you or your child show signs of measles: Call your doctor before you enter so they can minimize the release of people in the waiting room.
Multnomah, Clackamas, Cowlitz, Klickitat and Washington have no cases.
"Most people are immunized, but measles also has a way to find people who are not, it's the most contagious human disease we know of," Dr. Paul Lewis with Multnomah County Health.
Dr. Lewis says if you have a child under the age of 1 you are worried about, you can talk to your doctor to get the vaccine early. You should also ask at every daycare center if your child is up to date on vaccinations.
If you have further questions about measles, contact your local health department:
Clark County Public Health: (360) 397-8021
Public Health in Clackamas County: (503) 655-8411  Multnomah Public Health: (503) 988-3406
Public Health in Washington: (503) 846-3594
Below is a list of all the sites where the infected patients were contagious:
Facilities for Healthcare:
PeaceHealth Emergency Care – Memorial, 3400 Main St.
Lunch until 7:30 pm Monday December 31
4:30 to 7:50 pm Saturday, January 19.
Magnolia Family Clinic, 2207 NE Broadway, Suite 200, Portland from 11:30 am to 3:00 pm Tuesday, January 8
The Vancouver Clinic, 700 NE 87th Ave., Vancouver
3:30 to 7:00 pm Friday, 11th January.
10:45 am to 1:30 pm Saturday, January 12th.
4:30 am to 7:30 pm Sunday, January 13th.
9.30am to 1.00pm Monday, January 14th.
Vancouver Clinic Columbia Tech Center, 501 SE 172. Ave., Vancouver from 11:30 am to 4:00 pm Friday, January 11
Imperial Cascade Park Medical Office, 12607 SE Mill Plain Blvd., Vancouver
1 to 8.30 pm Saturday, 12th January
7 pm Tuesday, 15th to 2nd January on Wednesday, 16th January.
12:30 to 19:30 Saturday, 19 January.
Emergency Department of the PeaceHealth Southwest Medical Center, 400 NE, Mother Joseph Place, Vancouver
22:00, Saturday, January 16. 12 to 4 o'clock Sunday, 13th of January.
12:30 to 20:30 Sunday, 13 January.
Legacy Department of the Emergency Salmon Creek Medical Center, 2211 NE 139th St., Vancouver
8:30 am Saturday, January 12th to 1am Sunday, January 13th.
5:45 pm Sunday, January 13th and 12:30 pm Monday, January 14th.
11:40 pm Monday, January. 14 to 5:10 pm Tuesday, January 15.
Rose Urgent Care and Family Practice, 18 NW 20th Ave., Battleground from 15:45 to 20:00 Mon Mon, 14 January.
Kaiser Orchards Medical Office, 7101 NE 137th Ave., Vancouver
13:55 to 18:10 Monday, 14 January.
1:50 to 7:30 pm Thursday, January 24
The Vancouver Clinic Salmon Creek, 2525 NE 139th St., Vancouver
8:15 am to noon Friday, January 18
4:30 pm 9:30 pm Wednesday, January 23
Legacy GoHealth Urgent Care Cascade Park, 305 SE Chkalov Drive, Vancouver from 6:25 pm to 10:15 pm Tuesday, January 22nd.
The Randall Children's Hospital at Legacy Emanuel in Portland has been removed from the list of potential exposure facilities. Public Health learned that the Randall Children's Hospital had been informed in advance about the potential measles patient and was able to take preventive measures to ensure that other patients were not exposed to the patient.
Schools and childcare facilities:
Cornerstone Christian Academy, 10818 NE 117th Ave., Vancouver on Friday, January 4
Vancouver Home Connection, 301 S. Lieser Road, Vancouver on Monday, January 7; Wednesday, January 9; and Friday, January 11th.
Hearthwood Elementary School, 801 New York's Hearthwood Boulevard, Vancouver, Monday, January 7; Tuesday, January 8; and Wednesday, January 9th.
Slavic Christian Academy, 7300 MacArthur Blvd., Vancouver, Monday, January 7th.
Picture Primary School, 4400 NE 122. Ave., Vancouver, Tuesday, January 8 and Wednesday, January 9
Eisenhower Elementary School, Ninth Ave. 9201 NW, Vancouver on Tuesday, January 8 and Wednesday, Aug. 9 January.
Evergreen High School, 14300 NE 18th St., Vancouver on Wednesday, January 8th. 9.
Maple Grove School, 601B SW Eaton Blvd., Battleground on Tuesday, January 8th and Wednesday, January 9th.
Orchard Elementary School, 11405 NE 69th St., Vancouver on Monday, January 14
River HomeLink, 601 SW Eaton Blvd., Battleground on Tuesday, January 8th and Wednesday, January 9th.
St. Paul Christian Daycare, 1309 Franklin Street, Vancouver:
Wednesday, January 16
Thursday, January 17
Friday, January 18
Wednesday, January 23
Tukes Valley Primary School, 20601 NE 167th Ave., battlefield on Tuesday, January 8th.
Tukes Valley Middle School, 20601 NE 167th Ave., Battleground on Tuesday, January 8
Yelenas Daycare Center, 17007 NE 23rd St., Vancouver:
Tuesday, January 22
Wednesday, 23. January
Public Health requires the exclusion of students and staff without proven measles immunity only from schools identified as potential exposure sites. Students and staff excluded from the identified schools are also excluded from other schools, childcare and other gatherings. Pupils and co-workers in non-masseuse schools are not affected by exclusions.
Portland International Airport, 7000 NE Airport Way, Portland
10:45 am to 3:45 pm on Monday, January 7th. More specifically, anyone staying at the Concourse D and the Delta Sky Lounge during this time.
19:30 to 23:00 Tuesday, January 15. More specifically, the baggage claim area and the south end of the ticket counter (near Alaska Airlines and Starbucks).
Costco, 4849 NE 138th Ave., Portland
1 to 5:30 pm Tuesday, January 8
5:30 to 8:40 pm Wednesday, January 16
Oregon Museum of Science and Industry, OMSI, 1945 SE Water Ave., Portland from 14:30 to 19:00 Saturday, 19 January.
Trader Joe's 305 SE Chkalov Drive, Vancouver from 12.30pm to 3.40pm Monday, January 21st.
Walmart Supercenter, 14505 NE Fourth Level Blvd., Vancouver from 1:30 pm to 5:00 pm. Monday, January 21st.
A Pediatric Dentist, 101 NW 12th Ave., Battleground from 1:30 pm to 6:00 pm Tuesday, January 8th.
Amazon Lockers, 1131 SW Jefferson St., Portland from 3:30 to 7:00 pm Thursday, January. 10.
Chuck's Produce, 13215 SE Mill Plain Blvd., Vancouver from 8 am to 11.45 pm Thursday, 10 January and 2:30 pm to 5:30 pm Friday, January 11th.
Church of Christ Our Savior, 3612 F St., Vancouver
9:30 am to noon Sunday, January 6
6 to 11:30 pm Sunday, January 6
9:10 to 3:00 pm Sunday, January 13
Church of the Truth, 7250 NE 41st St., Vancouver from 11am to 4.30pm Sunday, January 6th.  Dollar Tree, 7809-B Vancouver Plaza Drive, Vancouver from 18:30 to 21:10 Tuesday, January 15.
Dollar Tree, 11501 NE 76th St., Vancouver from 8:10 pm to 10:50 pm Tuesday, January 15.
Dollar Tree, 305 SE Chkalov Drive, Vancouver from 13:10 to 16:00. Monday, January 21st. Fisher Investments, 5525 NW Fisher Creek Drive, Camas
6:20 pm Thursday, January 10
6:20 am to 7 pm Friday, January 11
6:20 to 7 pm Monday, April 14 January
6:20 to 7:00 pm Tuesday, January 15
GracePoint Christian Church, 7300 MacArthur Blvd., Vancouver from 6:30 am to 5:30 pm. Monday, January 7th.
God Will Provide Church, 7321 NE 110th St., Vancouver from 7am to 6pm Friday, 18th January.
Golden Corral, 11801 NE Fourth Plain Blvd., Vancouver from 4pm to 9pm Saturday, January 19th.
Ikea, 10280 NE Cascades Par kway, Portland from 16:30 to 20:30 Friday, January 11th.
Moda Center (Trail Blazers Game), 1 N Center Court St., Portland from 17:30 to 23:30. Friday, January. 11.
New Life Mission Church, 3300 NE 172nd Place, Portland from 9:30 am to 2:00 pm Sunday, January 20.
Pho Green Papaya, 13215 SE Mill Plain Blvd., Vancouver from 7.30 am to 10.30 pm Thursday, January 10th.
Rejuvenation, 1100 SE Grand Ave. Portland from 15:30 to 19:30 Thursday, 10 January.
Public areas of the Tower Mall (entrances, corridors), 5411 E. Mill Plain Blvd., Vancouver from 14:50 to 18:15. Wednesday, January 23.
Verizon Wireless at Cascade Station, 10103 NE Cascades Parkway, Portland from 5pm to 11pm Monday, January 14th.
Vancouver Division for Children, Adolescents and Families, 907 Harney St., Vancouver from 12: Friday, January 18, 15:15:15.
Women's, Infants and Children's Office (WIC) in Vancouver, 5411 E. Mill Plain Blvd., Vancouver, 14: 50-18: 15. Wednesday, January 23rd.