BRIEF-Avianca joins airlines offering Zika refunds for pregnant women
Jan 29 (Reuters) - Avianca Holdings Sa
* Avianca says will offer refund or route change to pregnant women with flights booked to zika area until feb 29
* Avianca says will also offer refund or route change to passengers diagnosed with zika virus, travelling anywhere Further company coverage: (Reporting By Rosalba O'Brien)
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