Moria gives it 3 1/2 out of 5 stars and says,
Steven Soderbergh’s treatment of the outbreak drama is, as always, cool and soberly intellectual. While there are plenty of scenes where he could have done otherwise, Soderbergh focuses on the drama in ways that avoid cliches.The New York Times has a positive review. The Guardian gives it 3 out of 5 stars.
Roger Ebert gives it 3 out of 4 stars. Rotten Tomatoes has a critics score of 84%.