Recent Google report suggests Android malware at a minimum on Google Play enabled devices

One of the main complaints Apple fanboys will make about Android is that it’s more susceptible to malware, and thereby a more risky choice for a phone, for obvious security reasons.
Google is now making an effort to quell these false claims, and recently released some graphics showing how hard it is to actually have malware damage your device and infiltrate your secure information. Note that their numbers only include devices that have Google Play Services— many phones without Google Play, such as those from China and Russia, are more at risk for malware.
Google’s Android Security chief Adrian Ludwig says that there are many layers of Android security constantly at work, and because of this, only .001% of all malware is even able to attempt to evade security, let alone actually get through.
The numbers get lower and lower as you pass through the multiple layers, as you can see from the graphic above.
This is not to say you should always be careful, especially when sideloading applicatoins, or if you have an untrusted app store on your device, which are the most common ways to get any type of malware on your device.
Source: PhoneArena