Questions with the keyword 'virus'

• How do scientists know how to make a vaccine if viruses can be different every year? by to Daren, Lynne, Phillip, Simon Comments: (No comments so far )
• What is the difference between bacteria and virus? by to Daren Comments: (So far, one comment )
• How come some humans are more vulnerable to illness than others? Do some humans just have worse luck, or is it by to Daren Comments: (No comments so far )