West Nile and EEE Protection / Information

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Current information regarding West Nile Virus and EEE activity can be obtained from the Arbovirus Surveillance Information web page located at www.mass.gov/dph/mosquito.

 

Information about protecting yourself from mosquitoes can be found in our mosquito control section.

 

Some examples of past or current informational releases from the Commonwealth of Massachusetts - Department of Public Health are below.

 

______________________________________________________

 

FOR IMMEDIATE RELEASE:

October 7, 2016

 

STATE HEALTH OFFICIALS ANNOUNCE THREE MORE HUMAN CASE OF WEST NILE VIRUS IN MASSACHUSETTS

Long weekend with good weather means opportunities for mosquito bites

 

BOSTON – The Massachusetts Department of Public Health (DPH) today announced three more human case of West Nile virus (WNV) in the state this year. All three patients reside in Middlesex County and are over the age of 70. Two of them, both women, were hospitalized but have been discharged. The third, a man, never required hospitalization. They were diagnosed with WNV by testing completed by the Massachusetts State Public Health Laboratory.

 

“It is very important for residents to know that even though it is fall, WNV remains a risk,” said DPH State Public Health Veterinarian Dr. Catherine Brown, "Since 2001 when WNV first arrived in Massachusetts, 10% of human infections have occurred after September.  We are urging people, especially people that are older or whose immune systems are compromised, to be especially vigilant about avoiding mosquito bites.”

 

In 2015, there were ten human cases of WNV infection identified in Massachusetts. WNV is usually transmitted to humans through the bite of an infected mosquito. While WNV can infect people of all ages, people over the age of 50 are at higher risk for severe disease. Most people infected with WNV will have no symptoms. When present, WNV symptoms tend to include fever and flu-like illness. In rare cases, more severe illness can occur.

 

People have an important role to play in protecting themselves and their loved ones from illnesses caused by mosquitoes.

 

Avoid Mosquito Bites

Apply Insect Repellent when Outdoors. Use a repellent with DEET (N, N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), oil of lemon eucalyptus [p-methane 3, 8-diol (PMD)], or IR3535 according to the instructions on the product label. DEET products should not be used on infants under two months of age and should be used in concentrations of 30% or less on older children. Oil of lemon eucalyptus should not be used on children under three years of age.

 

Be Aware of Peak Mosquito Hours. The hours from dusk to dawn are peak biting times for many mosquitos. Consider rescheduling outdoor activities that occur during evening or early morning.

 

Clothing Can Help Reduce Mosquito Bites. Wear long-sleeves, long pants, and socks when outdoors to help keep mosquitos away from your skin.

 

Mosquito-Proof Your Home

Drain Standing Water. Mosquitos lay their eggs in standing water. Limit the number of places around your home for mosquitos to breed by either draining or discarding items that hold water. Check rain gutters and drains. Empty any unused flowerpots and wading pools, and change water in birdbaths frequently.

 

Install or Repair Screens. Keep mosquitos outside by having tightly-fitting screens on all of your windows and doors.

 

Protect Your Animals

Animal owners should reduce potential mosquito breeding sites on their property by eliminating standing water from containers such as buckets, tires, and wading pools – especially after heavy rains. Water troughs provide excellent mosquito breeding habitats and should be flushed out at least once a week during the summer months to reduce mosquitos near paddock areas. Horse owners should keep horses in indoor stalls at night to reduce their risk of exposure to mosquitos. Owners should also speak with their veterinarian about mosquito repellents approved for use in animals and vaccinations to prevent WNV and EEE. If an animal is diagnosed with WNV or EEE, owners are required to report to DAR, Division of Animal Health by calling 617-626-1795 and to the Department of Public Health (DPH) by calling 617-983-6800.

 

More information, including all WNV and EEE positive results, can be found on the Arbovirus Surveillance Information web page at www.mass.gov/dph/mosquito or by calling the DPH Epidemiology Program at 617-983-6800.

 

______________________________________________________

 

FOR IMMEDIATE RELEASE:

September 30, 2016

 

FOR FURTHER INFORMATION:

Omar Cabrera (617) 624-5089

 

 

STATE HEALTH OFFICIALS ANNOUNCE SIXTH HUMAN CASE OF WEST NILE VIRUS IN MASSACHUSETTS

End of mosquito season in sight but not gone yet

 

BOSTON – September 30, 2016 - The Massachusetts Department of Public Health (DPH) today announced the sixth human case of West Nile virus (WNV) in the state this year. The individual, from Middlesex County, is in his 60s and developed a less severe form of the disease and was not hospitalized for his illness. He was diagnosed with WNV by testing completed today by the Massachusetts State Public Health Laboratory.

 

“It certainly doesn’t feel like mosquito weather outside,” said DPH State Public Health Veterinarian Dr. Catherine Brown, "However, female mosquitoes in particular are still active and biting. For that reason we are urging people, especially people that are older or whose immune systems are compromised, to be especially vigilant about avoiding mosquito bites.”

 

In 2015, there were ten human cases of WNV infection identified in Massachusetts. WNV is usually transmitted to humans through the bite of an infected mosquito. While WNV can infect people of all ages, people over the age of 50 are at higher risk for severe disease. Most people infected with WNV will have no symptoms. When present, WNV symptoms tend to include fever and flu-like illness. In rare cases, more severe illness can occur.

 

People have an important role to play in protecting themselves and their loved ones from illnesses caused by mosquitoes.

 

Avoid Mosquito Bites

Apply Insect Repellent when Outdoors. Use a repellent with DEET (N, N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), oil of lemon eucalyptus [p-methane 3, 8-diol (PMD)], or IR3535 according to the instructions on the product label. DEET products should not be used on infants under two months of age and should be used in concentrations of 30% or less on older children. Oil of lemon eucalyptus should not be used on children under three years of age.

 

Be Aware of Peak Mosquito Hours. The hours from dusk to dawn are peak biting times for many mosquitos. Consider rescheduling outdoor activities that occur during evening or early morning.

 

Clothing Can Help Reduce Mosquito Bites. Wear long-sleeves, long pants, and socks when outdoors to help keep mosquitos away from your skin.

 

Mosquito-Proof Your Home

Drain Standing Water. Mosquitos lay their eggs in standing water. Limit the number of places around your home for mosquitos to breed by either draining or discarding items that hold water. Check rain gutters and drains. Empty any unused flowerpots and wading pools, and change water in birdbaths frequently.

 

Install or Repair Screens. Keep mosquitos outside by having tightly-fitting screens on all of your windows and doors.

 

Protect Your Animals

Animal owners should reduce potential mosquito breeding sites on their property by eliminating standing water from containers such as buckets, tires, and wading pools – especially after heavy rains. Water troughs provide excellent mosquito breeding habitats and should be flushed out at least once a week during the summer months to reduce mosquitos near paddock areas. Horse owners should keep horses in indoor stalls at night to reduce their risk of exposure to mosquitos. Owners should also speak with their veterinarian about mosquito repellents approved for use in animals and vaccinations to prevent WNV and EEE. If an animal is diagnosed with WNV or EEE, owners are required to report to DAR, Division of Animal Health by calling 617-626-1795 and to the Department of Public Health (DPH) by calling 617-983-6800.

 

More information, including all WNV and EEE positive results, can be found on the Arbovirus Surveillance Information web page at www.mass.gov/dph/mosquito or by calling the DPH Epidemiology Program at 617-983-6800.

 

______________________________________________________

 

FOR IMMEDIATE RELEASE:

September 20, 2016

 

FOR FURTHER INFORMATION:

Omar Cabrera (617) 624-5089

 

STATE HEALTH OFFICIALS ANNOUNCE THIRD HUMAN CASE OF WEST NILE VIRUS IN MASSACHUSETTS

Residents reminded that risk is greatest for those over 50

 

BOSTON – September 20, 2016 - The Massachusetts Department of Public Health (DPH) today announced the third human case of West Nile virus (WNV) in the state this year. The patient is a resident of Suffolk County in his 70’s who was diagnosed with WNV by testing completed today by the Massachusetts State Public Health Laboratory. The individual is currently hospitalized.

 

“Risk from WNV in Massachusetts will continue until the first hard frost,” said DPH State Public Health Veterinarian Dr. Catherine Brown. "It is especially important for individuals over the age of 50 and those that are immunocompromised to continue to avoid mosquito bites by using repellent, using clothes to reduce exposed skin and reducing outdoor activity between dusk and dawn.”

 

In 2015, there were ten human cases of WNV infection identified in Massachusetts. WNV is usually transmitted to humans through the bite of an infected mosquito. While WNV can infect people of all ages, people over the age of 50 are at higher risk for severe disease. Most people infected with WNV will have no symptoms. When present, WNV symptoms tend to include fever and flu-like illness. In rare cases, more severe illness can occur.

 

People have an important role to play in protecting themselves and their loved ones from illnesses caused by mosquitoes.

 

Avoid Mosquito Bites

Apply Insect Repellent when Outdoors. Use a repellent with DEET (N, N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), oil of lemon eucalyptus [p-methane 3, 8-diol (PMD)], or IR3535 according to the instructions on the product label. DEET products should not be used on infants under two months of age and should be used in concentrations of 30% or less on older children. Oil of lemon eucalyptus should not be used on children under three years of age.

 

Be Aware of Peak Mosquito Hours. The hours from dusk to dawn are peak biting times for many mosquitos. Consider rescheduling outdoor activities that occur during evening or early morning.

 

Clothing Can Help Reduce Mosquito Bites. Wear long-sleeves, long pants, and socks when outdoors to help keep mosquitos away from your skin.

 

Mosquito-Proof Your Home

Drain Standing Water. Mosquitos lay their eggs in standing water. Limit the number of places around your home for mosquitos to breed by either draining or discarding items that hold water. Check rain gutters and drains. Empty any unused flowerpots and wading pools, and change water in birdbaths frequently.

 

Install or Repair Screens. Keep mosquitos outside by having tightly-fitting screens on all of your windows and doors.

 

Protect Your Animals

Animal owners should reduce potential mosquito breeding sites on their property by eliminating standing water from containers such as buckets, tires, and wading pools – especially after heavy rains. Water troughs provide excellent mosquito breeding habitats and should be flushed out at least once a week during the summer months to reduce mosquitos near paddock areas. Horse owners should keep horses in indoor stalls at night to reduce their risk of exposure to mosquitos. Owners should also speak with their veterinarian about mosquito repellents approved for use in animals and vaccinations to prevent WNV and EEE. If an animal is diagnosed with WNV or EEE, owners are required to report to DAR, Division of Animal Health by calling 617-626-1795 and to the Department of Public Health (DPH) by calling 617-983-6800.

 

More information, including all WNV and EEE positive results, can be found on the Arbovirus Surveillance Information web page at www.mass.gov/dph/mosquito or by calling the DPH Epidemiology Program at 617-983-6800.

 

______________________________________________________

 

FOR IMMEDIATE RELEASE:

September 13, 2016

 

FOR FURTHER INFORMATION:

Omar Cabrera (617) 624-5089

 

 

STATE HEALTH OFFICIALS ANNOUNCE SECOND HUMAN CASE OF WEST NILE VIRUS IN MASSACHUSETTS

Residents urged to continue to take precautions to avoid mosquito bites

 

BOSTON – September 13, 2016 - The Massachusetts Department of Public Health (DPH) today announced the second human case of West Nile virus (WNV) in the state this year. The patient is a resident of Norfolk County in his 70’s who was diagnosed with WNV by testing completed today by the Massachusetts State Public Health Laboratory. The case is currently hospitalized but improving.

 

DPH is conducting an epidemiological investigation to determine where the individual was most likely exposed to infected mosquitoes. Assessment of WNV risk areas will depend on the findings of this investigation.

 

“Massachusetts is still in the peak season for possible West Nile virus infection in people,” said DPH State Public Health Veterinarian Dr. Catherine Brown. Although Labor Day is the unofficial end of summer, it is not the end of mosquito season. Surveillance still indicates the presence of infected mosquitoes so it is important for people to continue to avoid mosquito bites by using repellent, using clothes to reduce exposed skin and reducing outdoor activity between dusk and dawn.”

 

In 2015, there were ten human cases of WNV infection identified in Massachusetts. WNV is usually transmitted to humans through the bite of an infected mosquito. While WNV can infect people of all ages, people over the age of 50 are at higher risk for severe disease. Most people infected with WNV will have no symptoms. When present, WNV symptoms tend to include fever and flu-like illness. In rare cases, more severe illness can occur.

 

People have an important role to play in protecting themselves and their loved ones from illnesses caused by mosquitoes.

 

Avoid Mosquito Bites

Apply Insect Repellent when Outdoors. Use a repellent with DEET (N, N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), oil of lemon eucalyptus [p-methane 3, 8-diol (PMD)], or IR3535 according to the instructions on the product label. DEET products should not be used on infants under two months of age and should be used in concentrations of 30% or less on older children. Oil of lemon eucalyptus should not be used on children under three years of age.

 

Be Aware of Peak Mosquito Hours. The hours from dusk to dawn are peak biting times for many mosquitos. Consider rescheduling outdoor activities that occur during evening or early morning.

 

Clothing Can Help Reduce Mosquito Bites. Wear long-sleeves, long pants, and socks when outdoors to help keep mosquitos away from your skin.

 

Mosquito-Proof Your Home

Drain Standing Water. Mosquitos lay their eggs in standing water. Limit the number of places around your home for mosquitos to breed by either draining or discarding items that hold water. Check rain gutters and drains. Empty any unused flowerpots and wading pools, and change water in birdbaths frequently.

 

Install or Repair Screens. Keep mosquitos outside by having tightly-fitting screens on all of your windows and doors.

 

Protect Your Animals

Animal owners should reduce potential mosquito breeding sites on their property by eliminating standing water from containers such as buckets, tires, and wading pools – especially after heavy rains. Water troughs provide excellent mosquito breeding habitats and should be flushed out at least once a week during the summer months to reduce mosquitos near paddock areas. Horse owners should keep horses in indoor stalls at night to reduce their risk of exposure to mosquitos. Owners should also speak with their veterinarian about mosquito repellents approved for use in animals and vaccinations to prevent WNV and EEE. If an animal is diagnosed with WNV or EEE, owners are required to report to DAR, Division of Animal Health by calling 617-626-1795 and to the Department of Public Health (DPH) by calling 617-983-6800.

 

More information, including all WNV and EEE positive results, can be found on the Arbovirus Surveillance Information web page at www.mass.gov/dph/mosquito or by calling the DPH Epidemiology Program at 617-983-6800.

 

______________________________________________________

 

FOR IMMEDIATE RELEASE:

August 16, 2016

 

FURTHER INFORMATION:

Omar Cabrera -  (617) 624-5089

 

 

STATE HEALTH OFFICIALS ANNOUNCE FIRST HUMAN CASE OF WEST NILE VIRUS IN MASSACHUSETTS

Residents urged to take precautions to avoid mosquito bites

 

BOSTON – August 16, 2016 - The Massachusetts Department of Public Health (DPH) today announced the first human case of West Nile virus (WNV) in the state this year. The patient is a resident of Middlesex County in her 70’s who was diagnosed with WNV through testing completed today by the Massachusetts State Public Health Laboratory. The patient remains hospitalized.

 

DPH is conducting an epidemiological investigation to determine where the individual was most likely exposed to infected mosquitoes. Assessment of WNV risk areas will depend on the findings of this investigation.

 

“This is peak season in Massachusetts for possible West Nile virus infection in humans,” said DPH State Public Health Veterinarian Dr. Catherine Brown. "The high temperatures and drought conditions that we’ve seen are resulting in elevated populations of the type of mosquitoes that are most likely to spread WNV. That’s why it is more important than ever to take steps to avoid mosquito bites by using repellents, covering up to reduce exposed skin, dumping standing water around the house and moving indoors at dusk when mosquito activity reaches its peak.”

 

In 2015, there were ten human cases of WNV infection identified in Massachusetts. WNV is usually transmitted to humans through the bite of an infected mosquito. While WNV can infect people of all ages, people over the age of 50 are at higher risk for severe disease. Most people infected with WNV will have no symptoms. When present, WNV symptoms tend to include fever and flu-like illness. In rare cases, more severe illness can occur.

 

People have an important role to play in protecting themselves and their loved ones from illnesses caused by mosquitoes.

 

Avoid Mosquito Bites

Apply Insect Repellent when Outdoors. Use a repellent with DEET (N, N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), oil of lemon eucalyptus [p-methane 3, 8-diol (PMD)], or IR3535 according to the instructions on the product label. DEET products should not be used on infants under two months of age and should be used in concentrations of 30% or less on older children. Oil of lemon eucalyptus should not be used on children under three years of age.

 

Be Aware of Peak Mosquito Hours. The hours from dusk to dawn are peak biting times for many mosquitos. Consider rescheduling outdoor activities that occur during evening or early morning.

 

Clothing Can Help Reduce Mosquito Bites. Wear long-sleeves, long pants, and socks when outdoors to help keep mosquitos away from your skin.

 

Mosquito-Proof Your Home

Drain Standing Water. Mosquitos lay their eggs in standing water. Limit the number of places around your home for mosquitos to breed by either draining or discarding items that hold water. Check rain gutters and drains. Empty any unused flowerpots and wading pools, and change water in birdbaths frequently.

 

Install or Repair Screens. Keep mosquitos outside by having tightly-fitting screens on all of your windows and doors.

 

Protect Your Animals

Animal owners should reduce potential mosquito breeding sites on their property by eliminating standing water from containers such as buckets, tires, and wading pools – especially after heavy rains. Water troughs provide excellent mosquito breeding habitats and should be flushed out at least once a week during the summer months to reduce mosquitos near paddock areas. Horse owners should keep horses in indoor stalls at night to reduce their risk of exposure to mosquitos. Owners should also speak with their veterinarian about mosquito repellents approved for use in animals and vaccinations to prevent WNV and EEE. If an animal is diagnosed with WNV or EEE, owners are required to report to DAR, Division of Animal Health by calling 617-626-1795 and to the Department of Public Health (DPH) by calling 617-983-6800.

 

More information, including all WNV and EEE positive results, can be found on the Arbovirus Surveillance Information web page at www.mass.gov/dph/mosquito or by calling the DPH Epidemiology Program at 617-983-6800.