Flood Watch
from FRI 11:00 AM MST until SAT 11:00 PM MST, Yavapai County Mountains, Little Colorado River Valley in Coconino County, Little Colorado River Valley in Navajo County, Little Colorado River Valley in Apache County, Eastern Mogollon Rim, White Mountains, Northern Gila County, Yavapai County Valleys and Basins, Oak Creek and Sycamore Canyons, Western Pima County including Ajo/Organ Pipe Cactus National Monument, Tohono O'odham Nation including Sells, Upper Santa Cruz River and Altar Valleys including Nogales, Tucson Metro Area including Tucson/Green Valley/Marana/Vail, South Central Pinal County including Eloy/Picacho Peak State Park, Southeast Pinal County including Kearny/Mammoth/Oracle, Upper San Pedro River Valley including Sierra Vista/Benson, Eastern Cochise County below 5000 ft including Douglas/Wilcox, Upper Gila River and Aravaipa Valleys including Clifton/Safford, White Mountains of Graham and Greenlee Counties including Hannagan Meadow, Galiuro and Pinaleno Mountains including Mount Graham, Chiricahua Mountains including Chiricahua National Monument, Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon, Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven, Baboquivari Mountains including Kitt Peak, Kofa, Central La Paz, Aguila Valley, Southeast Yuma County, Gila River Valley, Northwest Valley, Tonopah Desert, Gila Bend, Buckeye/Avondale, Cave Creek/New River, Deer Valley, Central Phoenix, North Phoenix/Glendale, New River Mesa, Scottsdale/Paradise Valley, Rio Verde/Salt River, East Valley, Fountain Hills/East Mesa, South Mountain/Ahwatukee, Southeast Valley/Queen Creek, Superior, Northwest Pinal County, West Pinal County, Apache Junction/Gold Canyon, Tonto Basin, Mazatzal Mountains, Pinal/Superstition Mountains, Sonoran Desert Natl Monument, San Carlos, Dripping Springs, Globe/Miami, Southeast Gila County

Valley health expert talks contact tracing as Arizona lifts stay-at-home order

More and more, people who test positive for COVID-19 in Maricopa County are hearing from contact tracers.

In 2003, contact tracing is credited with stopping the SARS virus, but an expert says with SARS, people knew they were sick. With COVID-19, people can be asymptomatic, or experience symptoms so mild, that they don’t know they have it, and they may not know the people they had contact with.

"When you’re a contact tracer, you’re going to have your 'A' List, 'B' List, and 'C' List," said Will Humble with the Arizona Public Health Association. "Really, all you’re going to have time to do is work your 'A' List, and that's family members, co-workers, and close family contacts. You’re going to realize you're not going to get to the 'B' List contacts, but working the 'A' List will make a difference."

Humble says contact tracing is important, but it will be most effective if people follow other guidelines for slowing the spread of COVID-19.

"It's not something that's going to make a huge dramatic change all on its own," said Humble.

Humble fully expects cases of COVID-19 in Arizona to increase.

"This is a big, brand new experiment now that started a few days ago, with the lifting of the stay-at-home order and the behavior changes of people in the community," said Humble. "It's gonna increase the cases. How much? we'l find out."

LIVE: Interactive Coronavirus case data and map

FULL COVERAGE: fox10phoenix.com/coronavirus

FOX 10 is working to keep you up to date with local and national developments on COVID-19. Every weekday on FOX News Now, our live coverage begins at 7 a.m. MST reporting the latest news, prevention tips, and treatment information.

You can watch live in your FOX 10 News app or on the FOX 10 Facebook page.

Get the latest coronavirus news by downloading the FOX 10 News App. Our promise is that our alerts are there to inform you - not scare you.

You can also get the latest coronavirus news from around the country at coronavirusnow.com

COVID-19 symptoms

Symptoms for coronavirus COVID-19 include fever, coughing, and shortness of breath. These, of course, are similar to the common cold and flu. 

Expect a common cold to start out with a sore or scratchy throat, cough, runny and/or stuffy nose. Flu symptoms are more intense and usually come on suddenly, and can include a high fever. 

Symptoms of COVID-19 may appear more slowly. They usually include fever, a dry cough, and noticeable shortness of breath, according to the World Health Organization. A minority of cases develop pneumonia, and the disease is especially worrisome for the elderly and those with other medical problems such as high blood pressure, obesity, diabetes, or heart conditions.

RELATED: Is it the flu, a cold or COVID-19? Different viruses present similar symptoms

Right now there's one big difference between flu and coronavirus: A vaccine exists to help prevent the flu and it's not too late to get it. It won't protect you from catching the coronavirus but may put you in a better position to fight it.

To protect yourself, wash your hands well and often, keep them away from your face, and avoid crowds and standing close to people.

And if you do find yourself showing any of these flu or coronavirus symptoms - don't go straight to your doctor's office. That just risks making more people sick, officials urge. Call ahead, and ask if you need to be seen and where.

In order to protect yourself from a possible infection, the CDC recommends: 

Avoid close contact with people who are sick.

Avoid touching your eyes, nose, and mouth.

Stay home when you are sick.

Cover your cough or sneeze with a tissue, then throw the tissue in the trash.

Clean and disinfect frequently touched objects and surfaces using a regular household cleaning spray or wipe.

Wash your hands often with soap and water for at least 20 seconds, especially after going to the bathroom; before eating; and after blowing your nose, coughing, or sneezing.

Additional resources

Coronavirus (COVID-19) - How it spreads, symptoms, prevention, treatment, FAQ

https://www.cdc.gov/coronavirus

https://espanol.cdc.gov/enes/coronavirus/2019-ncov/index.html (In Spanish/En Español)

Arizona COVID-19 Response - Public resources, FAQ, webinars

https://www.azdhs.gov/coronavirus

https://www.azdhs.gov/preparedness/epidemiology-disease-control/infectious-disease-epidemiology/es/covid-19/index.php#novel-coronavirus-home (In Spanish/En Español)

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How coronavirus differs from flu: Symptoms to watch for