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Scientist holding chemical sprayer for sterilization and decontamination of viruses, germs, pests, infectious diseases.
Biohazard sign represents danger, contamination, hazardous materials, caution, warning, and the need for proper safety measures
A man in a protective suit for chemical treatment. Treatment of premises from harmful insects, viruses, and bacteria. The concept of life security.
Biological hazard. Epidemic of the Chinese coronavirus. An asian woman in a protective suit and mask holds an injection syringe and vaccine. Vaccine from, flu, coronavirus, ebola, TB.

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