With reference to Norovirus, consider the following statements:
1. It is also known as the "winter vomiting bug," which causes vomiting and diarrhoea.
2. The most common infective agent is contaminated water or food.
3. It affects particularly children, the elderly and people suffering from other illnesses.
Which of the statements given above are correct?1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3