Sex at raves in Spain and Belgium could have caused the recent outbreak of monkeypox virus infections , according to leading leading health advisor. Post navigation National Highways: South-East retweeted: Lanes 3 and 4 (out of 4) are currently closed on the #M25 clockwise between J20 and J21 in #Hertfordshire due to a collision. @HertsPolice are in attendance. Please take care on approach. The #M2 in #Kent is closed eastbound between J2 and J3 due to a @kent_police incident. More information to follow shortly.