Addressing medical issues in grad school applications
I would think that the one semester is an anomaly. As such, since it was your first semester, it likely won't have much impact as long as you explain it adequately. People do get sick. Other people understand that. On the other hand some people do tend to party a lot and others may not be so understanding. But an explanation should suffice. If appropriate (it isn't always) be able to back up your statements with some evidence - say a recommendation from a doctor that the issue is in the past. 

Some people won't even blink since your trend line is positive. 

If you can also show the the poor grades early on didn't leave you with a hole in your education, all the better. That seems unlikely in this case, of course. 

But of course, my analysis won't be universal. Some people will look harshly, but it should be rare most places.