A common viral deer disease with no known treatment is believed to have killed more than 100 deer in Michigan in recent weeks.

Starting Tuesday morning, more than half-a-million hunters will head out into the woods for dear season. It’s estimated that hunting contributes more than $2 billion to the state’s economy yearly. But a shift is happening as both numbers have trended down for years.

The state Department of Natural Resources says a survey conducted in January estimates that Michigan’s elk population has increased 5% since 2019.