SAN SALVADOR

SAN SALVADOR, June 1 (Reuters) - El Salvador's President Nayib Bukele took office on Saturday for a second term pledging to cure the "illnesses" of the Central American country by prescribing his medicine to fix the economy, following his successful treatment to cure the "cancer of the gangs" during his first five years in office.

The 42-year-old former nightclub manager was reelected in a landslide victory with more than 80% of the vote in February, following a court decision that paved the way for his re-election even though the country's constitution prohibits it.

"Salvadorean society is still sick but it no longer has cancer," Bukele told the crowd from the balcony of the National Palace in the capital San Salvador. The cancer referred to criminal gangs that once made the country one of the world's deadliest to live in, but have been brought under control through mass arrests during his leadership.

"Now that we have fixed the most urgent thing, which was security, we are going to focus on the important problems, starting with the economy," said the president who faces fresh challenges to rejuvenate a stagnant economy and tackle poverty. Bukele added that his "prescription is working