They share approximately 50% of their DNA and 85% of their genetic material.While the percentage of DNA they share is relatively low when considering humans share over 98% of their DNA with chimps, how the DNA behaves and forms into genes is more important, because they share the major segments of DNA that are needed to contribute to biological functions – the genetic material.
The range and potential severity of HSV1 infections has led some experts to view the type as more risky than usually perceived.
‘This is here say, but I think type 1 is a more significant infection than type 2,’ says Spotswood Spruance, MD, an oral HSV specialist at the University of Utah.
The physical symptoms of HSV1 & HSV2 are indistinguishable.
For both HSV1 & HSV2, it is thought that at least two-thirds of infected people experience no symptoms at all or symptoms that are too mild to notice.
However, for some, HSV1 occurs in the eye, causing ocular herpes, and ocular herpes is a potentially serious infection that can lead to blindness.
In rarer cases, HSV1 spreads to the brain, causing herpes encephalitis, and herpes encephalitis is a dangerous infection that can lead to death.
That means HSV1 & HSV2 behave similarly, but from an evolutionary stand-point, they sort of diverged years ago when humans started having sex face to face.
That’s why a lot of their DNA is different, despite their genetic make-up remaining strikingly similar.
As a result, it’s estimated that as many as the same amount (two-thirds) of people are entirely unaware they are infected.
The primary difference between HSV1 & HSV2 is where the virus typically establishes latency in the body.
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