Zika Risk Reduced By Mosquito Spraying

In a new study published looked at 50 U.S. cities where the weather could support Aedes aegypti (the yellow fever mosquito that spreads Zika and other dangerous diseases) in warmer months.

Cities at Risk

Yellow cities are low-risk, orange are moderate, and red are high. The size of the dot over the city represents how many travelers from current Zika-affected countries come to the city on average each month. And the gray zone represents the area where Aedes aegypti has been observed in earlier years.

How Risk Was Calculated

To determine which cities would be most at risk and when, the researchers examined a number of factors:

  • The estimated abundance of Aedes aegypti mosquitoes per square meter of standing water, based on their life cycle and the historical meteorological conditions in each city (from 2005 to 2015)
  • The number of travelers arriving in those cities from Latin American countries currently affected by Zika (although the researchers do note that some people on those flights may have just connected through a Zika-affected country)
  • Previous cases of locally transmitted dengue and chikungunya, two other diseases transmitted by Aedes aegypti
  • Percentage of households in each city living under the poverty line, which makes people less likely to have air conditioning (Aedes aegypti doesn’t survive well in air-conditioned buildings), safe water, and good sanitation.
  • Irregular garbage collection in some areas may also provide opportunities for the bug to breed.)
  • Observations from 1960 to 2014 of the mosquito’s maximum geographic range

Expected To Spread

Based on their estimates, this is how the year plays out in terms of highest risk for abundant Aedes aegypti populations:

Mosquito Spraying Helps Prevention

It’s also worth noting that the models don’t account for mosquito-control methods—so there’s still plenty of room to bring this risk down by spraying for adult mosquitoes, using larvicides, and eliminating mosquito-breeding sites, particularly standing water.

Cockroach Protection and Prevention

Cockroaches have been long despised by homeowners due to their creepy appearance. Cockroach control and management are important for health and safety reasons, because cockroaches are known to cause allergic reactions and trigger asthma attacks, especially in children. They also spread nearly 33 kinds of bacteria including E. coli and Salmonella.

Cockroaches and Allergies

Several large-scale studies have reinforced the dangerous connection between cockroaches and asthma in children. One in five children in the United States have severe sensitivities to cockroach allergens, which can cause or increase the severity of asthma symptoms. These allergens are most commonly introduced into homes through cockroach saliva, droppings and the decomposing bodies of these pests.

When Cockroaches Appear

Homeowners must be vigilant in preventing such infestations, especially during the summer months. Cockroaches are most active when temperatures reach 70 degrees or above and these pests thrive in warm, dark and moist places.

Tips For Prevention

NPMA offers homeowners these tips to protect their families and properties from cockroach infestations:

  • Keep food sealed and stored properly, particularly in kitchens.
  • Clean kitchens daily, where crumbs and trash are more likely to build up.
  • Dispose of garbage regularly and store in sealed containers.
  • Seal cracks and holes in homes, including entry points for utilities and pipes.
  • Keep basements and crawl spaces well ventilated and dry.
  • Contact a qualified pest professional at Reardon Associates to treat any infestations.

Take Action If You See One

If you see a cockroach in your home please get ahead of the situation and call us immediately at 302-792-9300