I avoid Linux questions since my experience is with Windows, I rarely use Linux... But,
If you'd like, you can get ESET for Linux; however it costs money, just like the Windows version.
You can read more about ESET for Linux Desktop here:
http://www.eset.com/us/home/products/antivirus-linux/
If you want a free Linux AV, as
@Sr. Normal mentioned, Comodo have a free Antivirus product for Linux.
You can read more about Comodo Antivirus for Linux here:
https://www.comodo.com/home/internet-security/antivirus-for-linux.php
[I recommend trusting either ESET or Comodo to secure your Linux OS over ClamAV].
Using either ESET or Comodo would keep you more secured whilst using Linux. Most people claim Linux to be "safe", however it isn't as safe as people make out... Always keep it updated. Updates may not just provide bug fixes but patch up exploits which are made to target users. If you become a target of the exploit and have not got the patch update, then you may be out of luck.
I recommend using extensions on your browser such as: (of course browsers like Internet Explorer won't be on Linux... But I added to the "Supported on:" anyway if it was supported for that extension).
- HTTPS Everywhere (supported on: Chrome, Firefox, Opera and Firefox for Android)
- WOT (Web of Trust) (supported on: Chrome, Firefox, Internet Explorer, Safari, and for other browsers look into the "Bookmarklet" option for WOT).
I recommend the above extensions if the browser is supported for both Windows and Linux systems.*
You can even install a Virtual Machine on your Linux host. In the VM, you can test programs before executing them just to be safe that it isn't an exploit for Linux (and of course if you wanted to access Windows and have the privelege of using a snapshot say the VM became infected...).
Remember that no product no matter what OS you are on will protect you 100%. Everything can have a vulnerability in it (nothing is full proof), and the best product is yourself. Depending on the websites you visit, what you download,... Will depend on if you are "safe" or not. Should you not visit untrusted and risky websites and only run things you downloaded which you know are 100% safe, you are better secured by someone who is doing the opposite thinking they are protected because people say Linux is secure and because they have an AV running on it.
Cheers.
