PLEASE NOTE: EDIT CONTAINS CONVERTED 4:3 MATERIALbr br Venezuela's vice-president delivered the news of Hugo Chavez's latest health complications in an official statement.br br He said the new problems were linked to a respiratory infection diagnosed during treatment for cancer in Cuba.br br SOUNDBITE: VENEZUELAN VICE PRESIDENT NICOLAS MADURO SAYING (Spanish):br br "Nineteen days after undergoing surgery President Chavez's state of health continues to be delicate with complications that are being attended to in a process that is not without risks."br br Chavez, seen here during his 2012 election campaign, is undergoing treatment for an unspecified cancer in the pelvic area.br br The 58-year-old leader hasn't been seen in public nor heard from in three weeks.br br Vice-President Nicolas Maduro says he'll be staying in Havana while his boss's condition evolves.