railway RRB Technician Grade 3 Mock Test 2024 General Science Biology Human body

खालीलपैकी कोणती mRNA लस कोविड-19 संसर्गाविरूद्ध वापरली जाते?

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सिनोव्हॅक
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नोव्हावॅक्स
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मॉडर्ना
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स्पुतनिक
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