Hong Kong's first nasal spray flu vaccine should be trialled in mainland China to speed up process, top HKU microbiologist says | South China Morning Post
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Is the government wrong about giving children the nasal spray flu vaccine? | Vaccines and immunisation | The Guardian
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Amazon.com: PREVENCIA Cold and Flu Protection Nasal Spray Homeopathic Cold and Flu Remedy Non-Drowsy Immediate Protection for Flu and Cold Blocker, 0.5 Fl Oz (15mL) : Health & Household
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