Blacklegged tick bites can lead to Lyme disease, as well as Anaplasmosis, Babesiosis and Powassan virus though Nova Scotia has not seen Powassan cases so far.

Blacklegged tick bites can lead to Lyme disease, as well as Anaplasmosis, Babesiosis and Powassan virus though Nova Scotia has not seen Powassan cases so far.

Blacklegged tick bites can lead to Lyme disease, as well as Anaplasmosis, Babesiosis and Powassan virus though Nova Scotia has not seen Powassan cases so far.

Blacklegged tick bites can lead to Lyme disease, as well as Anaplasmosis, Babesiosis and Powassan virus though Nova Scotia has not seen Powassan cases so far.

The Anaplasmosis Treatment market is projected to grow from USD Billion 8.4 in 2024 to USD Billion 14.45 by 2035, at a CAGR of 5.02% during 2025-2035.

Anaplasma phagocytophilum is a tick-borne bacterium and the causative agent of human granulocytic anaplasmosis. Two major variants have been identified in North America: a human pathogenic variant (Ap-ha) that is maintained by small mammals and a nonpathogenic variant (Ap-v1) that is maintained by white-tailed deer (Odocoileus virginianus). Despite white-tailed deer being recognized as the main reservoir of Ap-v1, few studies have directly demonstrated transmission of Ap-v1 from white-tailed deer to feeding I. scapularis ticks, and transmission to feeding larvae remains undescribed. In this study, we collected samples from an outdoor white-tailed deer research facility during an I. scapularis larval questing season in the eastern United States to investigate the variants infecting white-tailed deer and acquisition by feeding larvae. Although both variants were present in questing ticks onsite, white-tailed deer were persistently infected with only Ap-v1 and transferred this variant to feeding I. scapularis larvae with high efficiency. These results support the concept that white-tailed deer play a role in the maintenance of Ap-v1 in nature and highlight the utility of captive white-tailed deer research facilities for studying vector–pathogen–host biology.

Alexander the Great Dane wore a tick collar and still nearly died from anaplasmosis. His owner and a local vet share what every pet parent needs to know this tick season.

Anaplasma phagocytophilum is a tick-borne bacterium and the causative agent of human granulocytic anaplasmosis. Two major variants have been identified in North America: a human pathogenic variant (Ap-ha) that is maintained by small mammals and a nonpathogenic variant (Ap-v1) that is maintained by white-tailed deer (Odocoileus virginianus). Despite white-tailed deer being recognized as the main reservoir of Ap-v1, few studies have directly demonstrated transmission of Ap-v1 from white-tailed deer to feeding I. scapularis ticks, and transmission to feeding larvae remains undescribed. In this study, we collected samples from an outdoor white-tailed deer research facility during an I. scapularis larval questing season in the eastern United States to investigate the variants infecting white-tailed deer and acquisition by feeding larvae. Although both variants were present in questing ticks onsite, white-tailed deer were persistently infected with only Ap-v1 and transferred this variant to feeding I. scapularis larvae with high efficiency. These results support the concept that white-tailed deer play a role in the maintenance of Ap-v1 in nature and highlight the utility of captive white-tailed deer research facilities for studying vector–pathogen–host biology.

While Pennsylvania has long been among the states most affected by Lyme disease, the incidence of other tick-borne illnesses is unknown because there’s no requirement to report them to public health authorities, state lawmakers heard Wednesday. The commonwealth had more than 16,000 reported cases of Lyme disease in 2024, according to the U.S. Centers for Disease Control, which tracks the bacterial infection nationwide. There were also more than 1,000 cases of anaplasmosis, another common bacterial disease transmitted by deer ticks. “We know that there’s more than that going on,” said Erika Machtinger, a Penn State associate professor of entomology and leader of the Penn State Extension Vector-borne Disease Team. “But Lyme disease is only the most visible part of the problem. Pennsylvania ticks are associated with many different pathogens.” Those include babesiosis, Powassan virus and alpha-gal syndrome, an immune reaction to bites from lone star ticks also known as “red meat allergy” because it causes an allergic response to sugars found in tick saliva and most mammals, she said. The commonwealth has built a strong foundation through years of tick surveillance, Machtinger told the state House Republican Policy Committee. The panel heard from experts and people diagnosed with tick-borne illnesses...

The black-legged tick (Ixodes scapularis), a key vector of Lyme disease, anaplasmosis, and babesiosis, exhibits regionally distinct patterns of seasonal activity driven by climate. Consequently, the relative timing of larval and nymphal activity varies across geographic locations, influencing pathogen transmission dynamics. Early-emerging nymphs may increase pathogen transmission, whereas early-emerging larvae may reduce transmission. In addition, synchrony between the two life-stages facilitates co-feeding transmission, which contributes to pathogen maintenance and coinfection risk. Temperature is thought to be an important driver of tick phenology, but existing mechanistic models that incorporate temperature fail to accurately capture the timing of larval and nymphal tick activity. To address this limitation, we developed a mechanistic model that includes two additional factors: humidity-dependent questing and low rates of overwinter development. To assess the value of these factors for explaining real-world patterns, we fitted alternative models to tick collection data from the National Ecological Observatory Network. In doing so, we found that explicitly incorporating humidity is necessary to reproduce observed tick phenology, with larval ticks being especially sensitive to relative humidity compared to other life stages. In addition, we found that accounting for humidity had a larger effect at Mid-Atlantic sites than at Northeastern sites, underscoring the importance of region-specific interactions between temperature and humidity in shaping I. scapularis phenology. By more accurately capturing tick seasonality compared to existing mechanistic models, our model illustrates the importance of accounting for factors beyond temperature for investigating how climate variability influences seasonal tick activity and pathogen transmission.

La mezcla de tropas con distintos antecedentes sanitarios, las agujas compartidas y el corto tiempo de permanencia hacen un escenario complejo para la prevención. (NAP) La prevención de la anaplasmosis...

The black-legged tick (Ixodes scapularis), a key vector of Lyme disease, anaplasmosis, and babesiosis, exhibits regionally distinct patterns of seasonal activity driven by climate. Consequently, the relative timing of larval and nymphal activity varies across geographic locations, influencing pathogen transmission dynamics. Early-emerging nymphs may increase pathogen transmission, whereas early-emerging larvae may reduce transmission. In addition, synchrony between the two life-stages facilitates co-feeding transmission, which contributes to pathogen maintenance and coinfection risk. Temperature is thought to be an important driver of tick phenology, but existing mechanistic models that incorporate temperature fail to accurately capture the timing of larval and nymphal tick activity. To address this limitation, we developed a mechanistic model that includes two additional factors: humidity-dependent questing and low rates of overwinter development. To assess the value of these factors for explaining real-world patterns, we fitted alternative models to tick collection data from the National Ecological Observatory Network. In doing so, we found that explicitly incorporating humidity is necessary to reproduce observed tick phenology, with larval ticks being especially sensitive to relative humidity compared to other life stages. In addition, we found that accounting for humidity had a larger effect at Mid-Atlantic sites than at Northeastern sites, underscoring the importance of region-specific interactions between temperature and humidity in shaping I. scapularis phenology. By more accurately capturing tick seasonality compared to existing mechanistic models, our model illustrates the importance of accounting for factors beyond temperature for investigating how climate variability influences seasonal tick activity and pathogen transmission.

Anaplasmosis cases are becoming more frequent as it spreads across the country from east to west

In addition to Lyme disease, the black-legged deer tick is spreading anaplasmosis at rising numbers in Quebec, Nova Scotia and Ontario.

In addition to Lyme disease, the black-legged deer tick is spreading anaplasmosis at rising numbers in Quebec, Nova Scotia and Ontario.

In addition to Lyme disease, the black-legged deer tick is spreading anaplasmosis at rising numbers in Quebec, Nova Scotia and Ontario.

In addition to Lyme disease, the black-legged deer tick is spreading anaplasmosis at rising numbers in Quebec, Nova Scotia and Ontario.

In addition to Lyme disease, the black-legged deer tick is spreading anaplasmosis at rising numbers in Quebec, Nova Scotia and Ontario.

In addition to Lyme disease, the black-legged deer tick is spreading anaplasmosis at rising numbers in Quebec, Nova Scotia and Ontario.