The World Health Organization on Saturday officially announced the end of Guinea's second Ebola outbreak which was declared in February and claimed 12 lives.

"Community engagement, effective public health measures and the equitable use of vaccines" had this time been key to overcoming Ebola, WHO chief Tedros Adhanom Ghebreyesus said in a statement.

The US Centers for Disease Control and Prevention (CDC) said in a statement that genetic sequencing showed links between the previous outbreak and the latest epidemic.