Experts predict 75 percent chance virus could be imported to France by October 24 and 50 percent chance it could hit Britain by then.
The agreement announced on Saturday provides for tighter border controls and increased cooperation between French and British police.
Just over half of French people polled want Britain to quit EU, with only 42 percent believing Brussels should take London's concerns into account.
British immigration minister says fencing could replace the 'inadequate' barriers at the French port as tensions rise over migrant issue.
Natacha Bouchart says town is held 'hostage' by about 1,300 migrants and will block port unless UK does more to control their numbers.
Forty French nationals have been evacuated by ship along with seven British nationals as battles rage between government forces and militias.
Officers clear makeshift camp housing some 500 migrants at a food distribution point close to the French port where they had been squatting.
Former French premier Michel Rocard argues the UK is stopping the European Union from finding the democratic force and legitimacy it needs.
Erroneous story about France 'banning' work emails after 6pm is just latest example of 'lazy' UK journalism about its neighbour across the Channel.
The two countries abandoned participation in planned preparatory talks for the June G8 summit in Sochi over Russia's intervention in Ukraine.
At Anglo-French summit Hollande dismays UK premier by saying he has no desire for a new treaty before next presidential elections in 2017.
French president thought unlikely to back British prime minister's call for greater EU 'flexibility' in first Anglo-French summit for four years.
The French alter-globalization militant, MEP and high-profile campaigner against GM crops, joined the rally at a fracking site in southern England.
UK Conservative Party chairman Grant Shapps claims François Hollande has run the French economy 'into the sand', ahead of a bilateral summit.
A poll of executives in the three countries show confidence in the German economy, doubts over that in Britain, and pessimism for France.