Herd immunity? Why North Dakota's coronavirus cases dropped so much
Herd immunity? Why North Dakota’s coronavirus cases dropped so much © THE CANADIAN PRESS IMAGES/Lars Hagberg Last November, North Dakota peaked at 10,209 active cases. North Dakota, once a major coronavirus hotspot, has seen its situation improve significantly in recent weeks and experts say it could be because of a number of reasons, including behaviour change and herd immunity in certain populations. Last November, North Dakota peaked at 10,209 active cases. As of Wednesday, the state was reporting 1,051 active cases. Dr. Joshua Wynne, vice-president of health affairs at the University...