2021 Ohio Vector-borne Disease Update 07/30/2021

Here is the latest report from the Ohio Department of Health Zoonotic Disease Program:

 

As of 07/29/2021, 6,198 pooled mosquito samples (204,425 Culex spp. total) have been tested for West Nile Virus (WNV). Of the 6,198 pooled samples tested so far, 86 samples have tested positive for WNV. The positive samples are from:

  • Clark County: 2 positive samples
  • Cuyahoga County: 4 positive samples
  • Franklin County (including Columbus Public Health):29 positive samples
  • Hamilton County (including Cincinnati Health Department): 1 positive sample
  • Lorain County: 7 positive samples
  • Lucas County: 41 positive samples
  • Portage County (including Kent City): 1 positive sample
  • Summit County: 1 positive sample

No human cases of WNV have been reported.

No human cases of La Crosse virus have been reported.

More details are available at: https://odh.ohio.gov/vectorupdate.

You may contact the Zoonotic Disease Program (614-752-1029, option 1) if you have any questions.

Ohio Vector Borne Disease Update: July 15, 2021

Here is the latest update from the Zoonotic Disease Program at the Ohio Department of Health:

As of 07/15/2021, 4,241 pooled mosquito samples (138,975 Culex spp. total) have been tested for West Nile Virus (WNV). Of the 4,241 pooled samples tested so far, 17 samples have tested positive for WNV. The positive samples are from:

  • Franklin County (including Columbus Public Health):11 positive samples
  • Hamilton County (including Cincinnati Health Department): 1 positive sample
  • Lucas County: 5 positive samples

No human cases of WNV have been reported.

No human cases of La Crosse virus have been reported.

More details are available at: https://odh.ohio.gov/vectorupdate.

You may contact the Zoonotic Disease Program (614-752-1029, option 1) if you have any questions.

Ohio Vector-Borne Disease Update: July 1, 2021

Here is the latest Ohio Vector-Borne disease update from the Ohio Department of Health:

 

As of 07/01/2021, 2,544 pooled mosquito samples (81,905 Culex spp. total) have been tested for West Nile Virus (WNV). Of the 2,544 pooled samples tested so far, 8 samples have tested positive for WNV. The positive samples are from:

  • Franklin County (including Columbus Public Health): 7 positive samples
  • Lucas County: 1 positive sample

 

No human cases of WNV have been reported.

 

The Ohio Department of Health has suggested that communities please consider increasing community and public education focused on personal protection to avoid mosquito bites and source reduction to prevent mosquito breeding.

 

More details are available at: https://odh.ohio.gov/vectorupdate.

 

The Zoonotic Disease Program can be reached at 614-752-1029 (option 1) if you have any questions.

Ohio Vector-borne Disease Update: June 15, 2021

The Ohio Department of Health has begun testing mosquitos for arboviral diseases during the 2021 surveillance season, and these are the initial results for June 15, 2021:

 

As of 06/15/2021, 368 pooled mosquito samples (12,043 Culex spp. total) have been tested for West Nile Virus (WNV). Of the 368 pooled samples tested so far, 0 samples have tested positive for WNV.  While we have not seen any positives yet, mosquitoes are active and now is a good time to start or increase your community and public education efforts focusing on personal protection to avoid mosquito bites and source reduction to prevent mosquito breeding.

 

For updated information or contact information you can visit The ODH Zoonotic Disease Program (ZDP) website, https://odh.ohio.gov/vectorupdate. The site will be updated every Friday.

 

The Zoonotic Disease Program can also be reached at 614-752-1029 (option 1) if you have any questions.

Ohio Vector-Borne Disease Update: September 22, 2020

Please see the latest information from Ohio Department of Health:

As of 09/17/2020, mosquito collection data has been shared by local partners in Ashland, Athens, Carroll, Clark, Clermont, Crawford, Cuyahoga, Fairfield, Franklin, Gallia, Hamilton, Hancock, Hocking, Lake, Licking, Lorain, Lucas, Mahoning, Medina, Meigs, Miami, Montgomery, Muskingum, Perry, Pickaway, Portage, Richland, Ross, Scioto, Shelby, Stark, Summit, Tuscarawas, Union, Vinton and Wood counties.

The following are results of pooled mosquito samples tested for West Nile virus (WNV):

  • Clark County: 13,495 total mosquitoes tested; 22 positive samples
  • Cuyahoga County: 1,057 total mosquitoes tested; 2 positive samples
  • Fairfield County: 1,558 total mosquitoes tested; 1 positive sample
  • Franklin County (including Columbus City): 122,261 total mosquitoes tested; 521 positive samples
  • Lake County: 4,642 total mosquitoes tested; 12 positive samples
  • Lucas County: 5,934 total mosquitoes tested; 59 positive samples
  • Portage County (including Kent City): 12,811 total mosquitoes tested; 2 positive samples
  • Richland County: 16,512 total mosquitoes tested; 4 positive samples
  • Summit County: 2,157 total mosquitoes tested; 2 positive samples
  • Union County: 2,999 total mosquitoes tested; 1 positive samples

This brings the total number of WNV positive mosquito samples in Ohio to 626. No human cases of WNV have been reported.

As of 09/17/2020, the Ohio Department of Health reported 19 cases of La Crosse virus. Cases include 12 males and 7 females between the ages of 3 -15 years (median: 6 years) reported from Carroll (1), Coshocton (2), Delaware (2), Fairfield (1),Harrison (1), Hocking (1), Holmes (2), Marion (1), Perry (1),  Pickaway (1), Summit (1), Trumbull (1), Warren (1), Washington (2) and Wayne (1) counties with onset of symptoms between 07/02/2020 – 08/21/2020. There are several additional suspect cases under investigation.

More details are at: www.odh.ohio.gov/vectorupdate or call the Ohio Department of Health Zoonotic Disease Program (614-752-1029, option 1).

Educational Resources for Bed Bugs, Ticks, Mosquitoes, Rodents, Stinging Insects and Head Lice

The NE IPM Center recently offered a list of public educational tools for the following:

  • bed bugs
  • head lice
  • rodents
  • mosquitoes
  • ticks
  • stinging insects

These resources are available posters, pocket cards, and guides. These resources are targeted at school nurses, but they are easily modifiable for all general audiences.

Find information for these resources at: https://www.northeastipm.org/schools/resources-for-school-nurses/

Ohio Vector-Borne Disease Update: August 24, 2020

The Ohio Department of Health (ODH) has been recording mosquito collection data from local partners in order to monitor for diseases transmitted by mosquitoes in Ohio. The ODH worked with partners in Ashland, Athens, Carroll, Clark, Clermont, Crawford, Cuyahoga, Fairfield, Franklin, Hamilton, Hancock, Hocking, Lake, Licking, Lorain, Lucas, Mahoning, Medina, Meigs, Miami, Montgomery, Muskingum, Perry, Pickaway, Portage, Richland, Ross, Scioto, Shelby, Stark, Summit, Tuscarawas, Union, Vinton and Wood counties in order to collect data from around the state.

Please see below for results of pooled mosquito samples tested for West Nile Virus as of 8/21/20:

  • Clark County: 9,365 total mosquitoes tested; 11 positive samples
  • Cuyahoga County: 1,057 total mosquitoes tested; 2 positive samples
  • Fairfield County: 810 total mosquitoes tested; 1 positive sample
  • Franklin County (including Columbus City): 92,773 total mosquitoes tested; 290 positive samples
  • Lake County: 2,826 total mosquitoes tested; 6 positive samples
  • Lucas County: 2,358 total mosquitoes tested; 24 positive samples
  • Richland County: 15,282 total mosquitoes tested; 3 positive samples

The total number of mosquito samples positive with West Nile Virus is now 337. As of 8/21/20, no human cases of West Nile Virus have been reported.

 

The ODH reported 4 cases of La Crosse Virus during the week of 8/17/20, which were Ohio’s first cases of La Crosse Virus for 2020. Cases include:

  • 3 males
  • 1 female
  • All between the ages of 6-15 year, median age: 9 years

The cases were reported in:

  • Carroll County: 1 case
  • Harrison County: 1 case
  • Trumbull County: 1 case
  • Warren County: 1 case

Onset of symptoms for those cases of La Crosse Virus were between 7/4/20-7/11/20. There are several additional suspect cases under investigation.

For additional information, please visit www.odh.ohio.gov/vectorupdate or call the Ohio Department of Health Zoonotic Disease Program (614-752-1029, option 1).

 

Nootkatone a New Active Ingredient Potential Repellent Now Registered by EPA

From the Environmental Protection Agency:

“A new active ingredient, discovered and developed by the Centers for Disease Control and Prevention (CDC), has been registered by the Environmental Protection Agency (EPA) for use in insecticides and insect repellents… the new ingredient, nootkatone, they may repel and kill ticks, mosquitoes, and a wide variety of other biting pests. Nootkatone is responsible for the characteristic smell and taste of grapefruit and is widely used in the fragrance industry to make perfumes and colognes. It is found in minute quantities in Alaska yellow cedar trees and grapefruit skin….Nootkatone can now be used to develop new insect repellents and insecticides for protecting people and pets. CDC’s licensed partner, Evolva, is in advanced discussions with leading pest control companies for possible commercial partnerships… products could be commercially available as early as 2022.”

EPA Press Release: https://www.epa.gov/pesticides/nootkatone-now-registered-epa

CDC Press Release at: https://www.cdc.gov/media/releases/2020/p0810-nootkatone-registered-epa.html

Evolva Press Release at: https://evolva.com/press-releases/evolva-receives-us-epa-registration-for-nootkatone-a-next-generation-protection-against-vector-borne-diseases-spread-by-insects  and https://nootkashield.com/2020/08/evolva-receives-us-epa-registration-for-nootkatone/ and https://nootkashield.com/2020/08/citrus-flavoring-is-weaponized-against-insect-borne-diseases/

Further information regarding this new repellent active ingredient is below.

 

CDC on Nootkatone:

https://www.cdc.gov/os/technology/techtransfer/successstories/nootkatone.htm

 

Other Honorable Mentions of Nootkatone:

https://federallabs.org/successes/success-stories/formulation-of-nootkatone-as-repellent-and-pesticide-products-against

https://www.npr.org/2011/04/18/135468567/repelling-bugs-with-the-essence-of-grapefruit

https://search.proquest.com/openview/97e6624cecab6c1efb69041670bab056/1?pq-origsite=gscholar&cbl=2029999

https://cen.acs.org/articles/94/i14/Nootkatone-tested-mosquito-repellent.html#:~:text=CDC%20researchers%20have%20shown%20that,those%20of%20synthetic%20pesticides%20(J.

 

Studies on Nootkatone (and attached):

http://jme.oxfordjournals.org/content/jmedent/47/6/1123.full.pdf

https://pubmed.ncbi.nlm.nih.gov/22308777/

https://pubmed.ncbi.nlm.nih.gov/22299371/

https://pubmed.ncbi.nlm.nih.gov/20069863/

https://apps.dtic.mil/dtic/tr/fulltext/u2/a512887.pdf

https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1402&context=ent_pubs

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3059459/

https://www.researchgate.net/publication/330722622_Insect-Repellent_and_Mosquitocidal_Effects_of_Noreremophilane-_and_Nardoaristolone-Based_Compounds

Efficacy of Active Ingredients From the EPA 25(B) List in Reducing Attraction of Aedes aegypti (Diptera: Culicidae) to Humans

Abstract

Mosquitoes of the Aedes genus are vectors for dengue, chikungunya, Zika, and yellow fever viruses. Mosquito repellents are an effective way to prevent mosquito bites and reduce the spread of mosquito-borne diseases. In the early 90s, the U.S. Environmental Protection Agency (EPA) published a list of active ingredients that pose minimum risk to human health that can be used as pesticides or repellents without passing the EPA registration process. The present study examined the efficacy of 21 of the active ingredients listed by the EPA 25 (B) exempt list and five commercially available sprays that only contained active ingredients from the EPA 25(B) list in repelling female Aedes aegypti (L.) females. We performed choice bioassays in a controlled laboratory environment, using a Y-tube olfactometer to determine attraction rates of humans to female Ae. aegypti in the presence of one of the 21 active ingredients and five commercially available repellent sprays. We found that cinnamon oil, peppermint oil, spearmint oil, lemongrass oil, and garlic oil reduced mosquito attraction to human odor. Of the five commercial repellent sprays, only one reduced mosquito attraction for up to 30 min in our assay. The EPA 25 (B) list contains active ingredients that under the conditions of our assay repel Ae. aegypti.

For full pdf, click HERE