Lúcia Mendonça Previato (born 1949) is a Brazilian biologist. She was awarded the L'Oréal-UNESCO Awards for Women in Science in 2004 for her research into preventing Chagas disease.

Biography 
Lucia Mendonça Previato was born in 1949, in Maceió, Brazil and moved with her family to Rio de Janeiro when she was 5 years old. She graduated from Universidade Santa Úrsula in 1971 and obtained her Doctorate from the Federal University of Rio de Janeiro in Microbiology and Immunology in 1976.

She did her post-doctoral work at the National Research Council of Canada, in Saskatoon, in Carbohydrate Chemistry and then moved to the Department of Biochemistry at the University of California, Berkeley, with biochemist Clinton E. Ballou. After returning to the Federal University of Rio de Janeiro in 1980, she set up the Surface Structure of Microorganisms Laboratory at the university's Institute of Microbiology, became a Full Professor in 1992, and directed the lab until 2001. It was then that she was named Director of the Laboratory of Glycobiology at the Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro. 

In her research, Previato and her team discovered the mechanism that allows Trypanosoma cruzi, the protozoan that transmits Chagas disease, to bypass the immune system when it infects a human organism. This discovery earned her one of the L'Oréal-UNESCO For Women in Science Awards in 2004. She also received the TWAS Prize in Biology in 2007 and the National Order of Scientific Merit (Comendador) in 2001.

Personal life 
She is married to Jose Osvaldo Previato and has two children.

Selected awards and honors 
 National Research Council of Brazil, Top Research Career Investigator, 1986
 Petrobras Award, National Invention Prize, 1987
 Member of the Brazilian Academy of Sciences, 1992
 International Research Scholar, Howard Hughes Medical Institute, 1997
 Scientist of Rio de Janeiro State Award in Biological Sciences, 1999
 Editor-in-Chief of Annals of the Brazilian Academy of Science, 2003

References 

1949 births
Living people
Brazilian women academics
Academic staff of the Federal University of Rio de Janeiro
Brazilian biologists
L'Oréal-UNESCO Awards for Women in Science laureates
21st-century Brazilian women scientists
TWAS laureates