Health
SACRAMENTO - California Department of Public Health (CDPH) Director and State Public Health Officer Dr. Karen Smith is urging Californians to protect themselves against mosquito bites if traveling to Mexico or Latin America, where there have been increased reports of the mosquito-borne diseases chikungunya and dengue.
Travelers should also be aware that there is currently transmission of dengue on the Big Island in Hawaii, and precautions against mosquito bites are advised; there are no reports of dengue transmission on the other Hawaiian islands.
“We want all Californians to be extra careful when traveling to these regions and take steps to avoid mosquito bites,” Dr. Smith said. “The mosquitoes that transmit chikungunya and dengue are aggressive daytime biters.”
Chikungunya is a viral disease characterized by acute onset of fever and severe joint pain. Dengue, another viral disease, is characterized by high fever, severe headache, muscle and joint pain, rash, and in severe cases bleeding manifestations.
For both, treatment is supportive, the disease is not contagious person to person, and there is no vaccine.
For 2015, 164 cases of chikungunya and 90 cases of dengue have been reported in California residents, all with a history of travel to areas where transmission of these diseases occurs.
Of reported cases in 2015, 148 (90 percent) chikungunya and 77 (86 percent) dengue cases had a history of travel to Latin America.
The number of reported California dengue cases with a history of travel to Mexico has increased in the last three years, with 80 in 2013-2015 compared to 17 in 2010-2012.
Three California residents have acquired dengue during the recent outbreak in the Big Island in Hawaii. There have been no cases of chikungunya and dengue acquired locally in California.
CDPH recommends that travelers prevent exposure to mosquito bites by wearing protective clothing and applying insect repellent containing DEET, picaridin, oil of lemon eucalyptus, or IR3535 according to label instructions. DEET can be used safely on infants and children two months of age and older.
In addition, make sure that your hotel or lodging has air conditioning or doors and windows with tight-fitting screens to keep out mosquitoes.
Chikungunya was first introduced to the Caribbean in late 2013, and by Nov. 30, 2015, over 25,000 confirmed cases were reported from the Caribbean and Central, South, and North America, including over 9,000 cases in Mexico.
Dengue transmission has also been prevalent throughout Latin American countries in recent years, and the risk of dengue is present in several Mexican states, including Baja California Sur (where Cabo San Lucas and La Paz are popular tourist areas).
If you have returned from an affected region and have fever with joint pain or rash within the two weeks following your return, please contact your medical provider and tell the doctor where you have traveled.
If your doctor suspects chikungunya or dengue, please protect yourself against mosquito bites until you recover. This will prevent spread of the virus to mosquitoes and potentially humans here in California.
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SACRAMENTO – California Department of Public Health (CDPH) Director and State Public Health Officer Dr. Karen Smith on Wednesday updated the warning regarding certain seafood caught in Humboldt and Del Norte counties.
All bivalve shellfish except razor clams have been removed from the current health advisories. Recent samples have shown that the levels of domoic acid have declined and are non-detectable in mussels from this region.
Advisories continue to be in place for:
· Consumers to avoid eating recreationally and commercially caught Dungeness and Rock crabs caught in waters between the Oregon border and the southern Santa Barbara County line. This is due to the persistent dangerous levels of domoic acid in these species.
· Consumers to avoid eating razor clams from Humboldt or Del Norte counties. Razor clams can retain domoic acid for a long period of time and remain at dangerous levels for this toxin.
Domoic acid accumulation in seafood is a natural occurrence that is related to a ‘bloom’ of a particular single-celled plant.
The conditions that support the growth of this plant are impossible to predict. CDPH will continue its efforts to collect a variety of samples from these areas to monitor the level of domoic acid in seafood.
Symptoms of domoic acid poisoning can occur within 30 minutes to 24 hours after eating toxic seafood.
In mild cases, symptoms may include vomiting, diarrhea, abdominal cramps, headache and dizziness. These symptoms disappear within several days.
In severe cases, the victim may experience trouble breathing, confusion, disorientation, cardiovascular instability, seizures, excessive bronchial secretions, permanent loss of short-term memory (a condition known as amnesic shellfish poisoning), coma or death.
There have been no reported illnesses associated with this event.
To receive updated information about shellfish poisoning and quarantines, call CDPH’s toll-free Shellfish Information Line at 800-553-4133.
For additional information visit CDPH’s Natural Marine Toxins: PSP and Domoic Acid Web page and CDPH’s Domoic Acid health information page.
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