ព័ត៌មាន​​ថ្មី

Researchers Call for Stronger Efforts to End the Disease Polio


Researchers Call for Stronger Efforts to End the Disease Polio

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ទាញ​យក​ពី​តំណភ្ជាប់​ដើម

Polio immunization should be part of a larger health program, say researchers.

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