Mosquito Transmitted

D&M provides a high level of care and understanding when it comes to the standard vaccinations we all need.

Japanese Encephalitis

What is Japanese encephalitis?

Japanese encephalitis is a disease that involves the inflammation of the brain and is caused by a viral infection. The risk for developing Japanese encephalitis is in Asian countries, however this risk is usually very low. The risk for Japanese encephalitis increases in rural and agricultural areas and for travelers visiting affected areas for periods greater than one month.

How is Japanese encephalitis transmitted?

Japanese encephalitis is spread by infected mosquitoes and therefore it is important to follow precautions that minimize exposure to mosquitoes.

What are the symptoms of Japanese encephalitis?

Japanese encephalitis usually causes mild symptoms such as headache and fever, but about 1 person for every 200 infected can develop a more serious infection whereby symptoms develop and worsen rapidly. Symptoms include fever, headache, neck stiffness, coma, and seizures, paralysis and death. About 1 in 5 people with a serious case will develop long term complications from infection and up to 30% of people with serious infection may die.

How long does it take for symptoms of Japanese encephalitis to develop?

Symptoms generally develop 5 to 15 days after being bitten by an infected mosquito.

Vaccines

•The Ixiaro® vaccine is generally recommended for people staying in areas at risk for Japanese encephalitis for one month or more, those visiting rural agricultural areas, and those working, hiking, or camping at night.
• The vaccine Ixiaro® is given as 2 doses 28 days apart. Both doses should be completed at least 1 week before travel.
• A booster dose of Ixiaro® should be given 1 year after the initial injections if there is a risk for re­exposure to Japanese encephalitis.

Prevention Strategies

• Japanese encephalitis is spread by mosquito bites, therefore mosquito bite avoidance measures should be taken.
• How to decrease the risk of mosquito bites:

  •  Air conditioned accommodations decrease the risk of mosquito bites
  • Use bug nets if your accommodations don’t have air conditioner or
    appropriate screens or windows. Bug nets have usually been treated with insecticide and need to be re­treated every 6 months.
  • Use an insect repellant that contains at least 25% DEET. DEET is safe to use if the instructions are followed carefully and appropriately.
  • Wear loose fitting and light colored clothing including long pants and long shirts if possible.
  • Ensure you are using effective insect repellants as products such as citronella candles and tea tree oils are not considered appropriate nor effective.

Dengue

What is dengue?

Dengue is a disease that is spread by mosquitoes. Dengue generally causes mild symptoms but some people will develop more serious symptoms and complications.

How is dengue transmitted?

Dengue is transmitted through mosquito bites. The risk for dengue is higher during the day than in the evening which contrasts with other mosquito transmitted diseases including malaria. The risk for dengue exists in over 100 countries and continues to spread into new areas. Dengue has been reported in parts of Mexico, South America, Africa, and Asia.

What are the symptoms of dengue?

Dengue usually causes mild flu­like symptoms such as fever, headache, joint and muscle pain, and nausea. In some cases, more serious symptoms can occur and these include severe abdominal pain, persistent vomiting, trouble breathing, and blood in vomit. Fortunately, most serious cases of dengue can be managed with hospital care and therefore it is important to seek medical attention if you are experience these symptoms while traveling.

How long does it take for symptoms of dengue to develop?

Symptoms usually appear 5 to 8 days after being bitten by an infected mosquito and the symptoms generally resolve on their own.

Vaccines and Prevention Strategies:

• There are currently no vaccines available for dengue and therefore prevention is best done through mosquito bite avoidance.
•The mosquitoes that cause dengue are more active from dawn until dusk (daytime hours) than dusk until dawn (evening hours).
• How to decrease the risk of mosquito bites:

  •  Air conditioned accommodations decrease the risk of mosquito bites
  • Use bug nets if your accommodations don’t have air conditioner or
    appropriate screens or windows. Bug nets have usually been treated with insecticide and need to be re­treated every 6 months.
  • Use an insect repellant that contains at least 25% DEET. DEET is safe to use if the instructions are followed carefully and appropriately.
  • Wear loose fitting and light colored clothing including long pants and long shirts if possible.
  • Ensure you are using effective insect repellants as products such as citronella candles and tea tree oils are not considered appropriate nor effective.

Chikungunya

What is chikungunya?

Chikungunya is a viral infection that is spread through a mosquito bites by infected mosquitoes. Select countries in North America, South America, Europe, Asia, and Africa contain mosquitoes that are capable of spreading the virus that causes chikungunya. There is no vaccine to prevent the development of chikungunya, therefore it is important to avoid mosquito bites while traveling.

How is chikungunya transmitted?

Chikungunya is transmitted by mosquitoes. The mosquitoes that spread chikungunya are more active during the day than at night. This contrasts with other mosquito­borne illnesses such as malaria where the mosquitoes responsible are more active at night.

What are the symptoms of chikungunya?

The most common symptoms of chikungunya are fever and joint pain. In most people, symptoms will resolve on their own after a week, but in others the joint pain may continue for several months.

How long does it take for symptoms of chikungunya to develop?

Symptoms usually develop 3 to 7 days after being bitten by an infected mosquito.

Vaccines and Prevention Strategies:

•Chikungunya is caused by mosquito bites and therefore mosquito bite avoidance is important to reduce your risk of contracting chikungunya.
• There is currently no vaccine to protect against chikungunya.
• How to decrease the risk of mosquito bites:

  •  Air conditioned accommodations decrease the risk of mosquito bites
  • Use bug nets if your accommodations don’t have air conditioner or
    appropriate screens or windows. Bug nets have usually been treated with insecticide and need to be re­treated every 6 months.
  • Use an insect repellant that contains at least 25% DEET. DEET is safe to use if the instructions are followed carefully and appropriately.
  • Wear loose fitting and light colored clothing including long pants and long shirts if possible.
  • Ensure you are using effective insect repellants as products such as citronella candles and tea tree oils are not considered appropriate nor effective.

Malaria

What is malaria?

Malaria is a disease spread by mosquitoes that are infected with parasites called Plasmodium. There are over 100 countries where the risk of developing malaria exists. These countries are in warm climates in countries below the equator include countries in Africa, South America, Asia, and the Caribbean.

How is malaria transmitted?

Malaria is transmitted by mosquitoes.

What are the symptoms of malaria?

Mild symptoms of malaria include fever, muscle aches, chills, cough, headache, diarrhea and chills. Malaria can usually be cured if it is identified and treated in a timely manner. In some cases, malaria will develop into a more severe case. Serious symptoms include abnormal behavior, seizures, coma, severe anemia, low blood pressure, kidney failure, and many other symptoms. Severe malaria is considered a medical emergency and should be treated immediately.

How long does it take for symptoms of malaria to develop?

After being bitten by an infected mosquito it usually takes 7 to 30 days for symptoms to appear.

Vaccines

• There are no vaccines for malaria, however other medications can be taken while you are in a malaria zone to reduce your risk of developing malaria.
• The medications to prevent malaria are only effective for as long as you are taking them, and therefore do not provide long term protection against malaria.
• Medications to prevent malaria include Malarone® and doxycycline. It is important to take your malaria medications as directed by your prescriber to ensure they are effective.

Prevention Strategies:

• Malaria is caused by mosquito bites and therefore mosquito bite avoidance is important to reduce your risk of contracting malaria.
• A general rule for preventing and recognizing malaria is to follow ABCD:

  • Awareness of the risk of malaria ­ make sure you know which countries you are traveling to carry a risk of malaria
  • Bite prevention ­ use appropriate insect repellents, wear appropriate clothing and use sleep nets when required
  • Chemoprophylaxis ­ use antimalarial medication such as Malarone® or doxycycline before, during, and after you travel to protect you from developing malaria
  • Diagnosis and treatment should be prompt. If you are experiencing any symptoms it is important to seek medical attention immediately

•Other tips to decrease the risk of mosquito bites:

  •  Air conditioned accommodations decrease the risk of mosquito bites
  • Use bug nets if your accommodations don’t have air conditioner or
    appropriate screens or windows. Bug nets have usually been treated with insecticide and need to be re­treated every 6 months.
  • Use an insect repellant that contains at least 25% DEET. DEET is safe to use if the instructions are followed carefully and appropriately.
  • Wear loose fitting and light colored clothing including long pants and long shirts if possible.
  • Ensure you are using effective insect repellants as products such as citronella candles and tea tree oils are not considered appropriate nor effective.

Yellow Fever

What is yellow fever?

Yellow fever is a disease that is present in 43 countries and is spread by mosquito bites. Travelers to certain countries are required to be vaccinated for yellow fever before entering the country. Before traveling, make sure that you are vaccinated if any of the countries in your itinerary require vaccination. The countries that require yellow fever vaccination are in sub­Saharan Africa and tropical South America. You will be provided a card as proof of vaccination that you can bring with you on your travels.

How is yellow fever transmitted?

The yellow fever virus is transmitted by mosquitoes.

What are the symptoms of yellow fever?

Yellow fever can cause no symptoms in some people, while in others can cause serious symptoms or death. The first symptoms are usually fever, chills, severe headache, body aches, nausea, and weakness. The majority of people will improve after developing these symptoms. About 1 in 7 people will develop a more serious case where they experience high fever, jaundice, bleeding, and eventually shock and organ failure. There is no specific treatment or cure for yellow fever, and treatment is aimed at managing the symptoms of disease.

How long does it take for symptoms of yellow fever to develop?

Symptoms usually develop 3 to 6 days after being bitten by an infected mosquito.

Vaccines:

•The YF­VAX® vaccine for yellow fever is given as a single dose and it is effective for at least 10 years.
• Re­immunization is recommended every 10 years as travelers may be denied entry into a country requiring yellow fever vaccination if they have not had a booster within the previous 10 years.

Prevention Strategies:

• How to decrease the risk of mosquito bites:

  •  Air conditioned accommodations decrease the risk of mosquito bites
  • Use bug nets if your accommodations don’t have air conditioner or
    appropriate screens or windows. Bug nets have usually been treated with insecticide and need to be re­treated every 6 months.
  • Use an insect repellant that contains at least 25% DEET. DEET is safe to use if the instructions are followed carefully and appropriately.
  • Wear loose fitting and light colored clothing including long pants and long shirts if possible.
  • Ensure you are using effective insect repellants as products such as citronella candles and tea tree oils are not considered appropriate nor effective.