no such file or directory error after using clamxav

I am experiencing a loss of ability to open web links from searches I make. Some will open, most will not.

A few days ago the apple logo opened a page and said a virus had been detected. Afterwards, Mackeeper was very persistently trying to have me download software, which I did not. I did however download Clamxav and ran several scans, one of which isolated an infected file. I deleted that file using Clamxav. That is when I began to experience problems. Since I am new to Macbook pro, I do not have a backup or know how to fix the problem. When I search and try to open a resource, I receive an error message - "no such file or directory" -

I believe I must have deleted the file or directory needed when I deleted the infected file Clamxav found. Is there a way to repair the corruption I am experiencing? I have a 2012 MacBook Pro running El Capitan. I appreciate any help in order to get my MBP running agan! I am a student and have a lot of work on my laptop I would hate to lose. Plus, I am unable to do my current workload from school.

Thanks a lot for your answers!

Dixie