3 ms·Not true. There are growth limiting factors in infectious disease models, e.g., herd immunity.by gmfawcett 7y agoNot true. There are growth limiting factors in infectious disease models, e.g., herd immunity.empath75 7y agoThey're talking about exponential growth in general, i think.gmfawcett 7y agoAh, I didn't consider that.