In US, State officials have announced four more cases of Zika that are believed to have been transmitted in Texas, almost two weeks after announcing the first such case.<br/><br/>The first case, announced on 28th November, was a woman who stays in Brownsville, a town located on the Mexico border. <br/><br/>The Texas Department of State Health Services said today that the<br/>new cases were identified in tests conducted after her infection was diagonised.<br/><br/>Health officials are still investigating. None of those affected are pregnant.