According to the state's public health department, 800 cases have been reported in the past two weeks alone.
But it's not only people on the West Coast that should be alarmed.
According to the CDC, the U.S. has seen a 24% increase nationally in whooping cough cases, compared to January through April of last year.
While there are many symptoms, the actual name for the disease comes from the sound an infected person makes when gasping for breath after a coughing fit.
"One cough on a subway, you will infect 15- 20 people," Dr. Van Tulleken shared.
WHO NEEDS TO KNOW & WHY DOES IT MATTER:
Since the disease can be potentially fatal to newborns, if you have an infant or work around children – listen up.
It's time to get both them and parents vaccinated.
About half of the infants who get whooping cough end up in a hospital.
Dr. Van Tulleken acknowledged that some parents may be skeptical of vaccines, primarily because of past reports that linked them to autism, but he said those reports have been "completely debunked."
Although infants can't be vaccinated within the first six weeks of life, parents can build a "ring of protection" around their children by ensuring everyone else is vaccinated.
If you're an adult who's already gotten the vaccine, it's important to note there isn't lifetime immunity.
All adults should get a Tdap booster, unless you had one as a teenager (after age 11).
WHAT DO I DO IF I'M INFECTED?
Prevention is key so Dr. Van Tulleken said use common sense now.
Wash your hands and cough into your elbow to avoid spreading or catching whooping cough.
If you get sick, however, there is a first week or two where you're highly contagious and not very symptomatic.
During this time, if you feel like you have a cough or a cold, he suggested going to your family physician.
Depending on a variety of circumstances, they may or may not treat you with antibiotics.