NOV 28, 2015 8:10 AM PST

New Tick-Borne Bacterium Discovered

WRITTEN BY: Kerry Evans
Austrian researchers discovered a new strain of bacteria in foxes.  It is closely related to Candidatus Neoehrlichia and is likely transmitted by ticks.

Two varieties of Candidatus Neoehrlichia are known to be spread by ticks and cause illness.  Ca. N. mikurensis was isolated from Ixodes ricinus ticks in 1999 and has since been shown to infect humans, dogs, badgers, bears, hedgehogs, and shrews.  A second species, Ca. N. lotoris was found in raccoons in the United States.  Infection with Ca. Neoehrlichia causes flu-like symptoms and can be treated with doxycycline.  However, more severe cases cause thrombosis and embolism.
 
Candidatus is spread by Ixodes ricinus ticks.
Other common tick-borne diseases include tick-borne encephalitis and Lyme disease.  Tick-borne encephalitis is caused by the appropriately named “tick-borne encephalitis virus” (TBEV).  TBEV is an RNA virus that is closely related to West Nile, yellow fever, and dengue fever viruses, all of which are transmitted by insect vectors.  The fatality rate for TBEV is only around 1%, however, the disease can be quite severe, causing meningoencephalitis and myelitis.  Vaccines for TBEV are available, but require multiple doses and boosters.  

Lyme disease is probably the most well-known tick-borne disease.  Lyme is caused by the spirochete bacterium Borrelia burgdorferi.  It is transmitted by Ixodes scapularis, “blacklegged”, ticks and causes chronic disease if left untreated.  Once infected, most people develop a “bulls-eye” rash at the tick bite site.  Flu-like symptoms are common, but patients also develop swollen joints that can progress to “Lyme arthritis”.   

The moral is, take care to protect yourself when outdoors.  Wear long pants and sleeves when hiking and always check yourself for ticks!

Sources: Phys.org, CDC, MicrobeWiki, Wikipedia
 
 
About the Author
  • Kerry received a doctorate in microbiology from the University of Arkansas for Medical Sciences.
You May Also Like
DEC 02, 2019
Microbiology
DEC 02, 2019
Understanding How a Superbug Spreads in the Home
Superbugs, which are pathogens that are resistant to the effects of antibiotics, are a rising threat to human health....
DEC 09, 2019
Immunology
DEC 09, 2019
Strep Throat Bacteria "Hides" from the Immune System
Group A Streptococcus (GAS), the bacterial species famous for sore throat infections, have a secret weapon for circumventing the immune response to bacteri...
DEC 11, 2019
Microbiology
DEC 11, 2019
Ocean Microbes Demonstrate an Evolutionary Principle in Action
Our world is teeming with bacteria and viruses, and in the oceans, their coexistence has them locked in an evolutionary battle....
DEC 17, 2019
Microbiology
DEC 17, 2019
Cold Infections Are Less Likely in People That Have the Flu
There may be a small silver lining to getting a cold or the flu....
JAN 21, 2020
Microbiology
JAN 21, 2020
New Coronavirus is Spreading in China
In late December, health officials in China notified WHO that pneumonia with an unknown cause was sickening people....
JAN 30, 2020
Microbiology
JAN 30, 2020
25% of Antibiotic-Resistant Bacteria Can Spread Resistance Directly to Other Microbes
This research also suggests that antibiotics do not increase the rate at which bacteria acquire drug resistance genes....
Loading Comments...