Excess burden and epidemiological costs vary with disease severity 0 日 Suppose disease L(common cold)has severity OL and disease H(Ebola)has severity H aΘH>ΘL L is 10 times more common,but 10 times less costly H and L share the same epidemiological costs L's excess burden is small because it doesn't induce much self protection H's excess burden is high because it is so severe Bhattacharya,Hyde and Tu-HealthEconomics Bhattacharya, Hyde and Tu – Health Economics Excess burden and epidemiological costs vary with disease severity Θ  Suppose disease L (common cold) has severity ΘL and disease H (Ebola) has severity ΘH  ΘH > ΘL  L is 10 times more common, but 10 times less costly  H and L share the same epidemiological costs  L’s excess burden is small because it doesn’t induce much self protection  H’s excess burden is high because it is so severe