Consider the following statements regarding Marburg's viral disease:
1. It has a 100% fatality rate and no vaccine has been developed to treat the disease.
2. Fruit bats are the key carriers of the disease.
3. Human-to-human transmission is not possible.
Which of the above statements is/are correct?
1
1 and 2 only
2
2 and 3 only
3
2 only
4
1 and 3 only