Deadly bacteria and fungus found in cannabis samples from Northern California

UC Davis researcher Dr. George Thompson advises cancer patients and others with weakened immune systems to avoid vaping or smoking marijuana.
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UC Davis researcher Dr. George Thompson advises cancer patients and others with weakened immune systems to avoid vaping or smoking marijuana.

Is your medical marijuana safe? UC Davis doctors say dangerous bacteria, fungi can lurk in pot

February 07, 2017 09:33 PM