There are many different species of ticks in New Brunswick, Nova Scotia and PEI. Ixodes scapularis, the black legged tick is the primary vectors for Borrelia, the Lyme disease bacteria in this region but other species can also carry and transit Borrelia and other bacteria, as well as viruses.
Whether a given tick can infect a human or other animal depends on whether it is infected and how long it feeds. However, all ticks can carry multiple pathogens so any tick bite should be recorded.
Each species of tick looks a bit different but the extent of engorgement (feeding), life stage, sex and other factors can make them look different. https://tickencounter.org/tick_identification and https://canlyme.com/lyme-basics/tick-id/ among others are
good resources for identifying ticks.
We are happy to identify any ticks submitted by mail (see "submit your tick") or high resolution images (many cell phones will take good close up pictures).
The Mount Allison Tick Bank is a resource of ticks, tick DNA, protein, images and metadata that is available to other researchers and community groups.