It looks more like Curly Top Virus than Leaf Curl Virus, but I don't even know if they have CTV where the OP is. In my garden, CTV plants look a lot like that but the top gets even more extreme before they are done. The leaves feel "leathery" too especially on the top most curled and purled ones.
http://www.coopext.colostate.edu/TRA...topvirus.shtml
In my climate CTV looks exactly like this:
http://ucanr.org/blogs/SalinasValley...me=curly%20top