[CentOS] clamAV problem

Since my power problems that resulted in a re-install I have a problem which I've failed to locate up to now. The logs show

daily.cld updated (version: 8950, sigs: 72593, f-level: 38, builder: ccordes) Database updated (510565 signatures) from db.gb.clamav.net (IP: 163.1.3.8) WARNING: Clamd was NOT notified: Can't connect to clamd through /tmp/clamd.socket

I've been through the config files, but obviously there is something in the setup that I've failed to do. Scans are running every night, but

service clamd status clamd: unrecognized service

It has to be something stupid that I've missed. Can someone kick me in the right direction? Thanks

Anne