Consider the following statements regarding Murine Typhus:

1. Murine typhus is transmitted to humans through the bites of infected fleas, which act as carriers of the bacteria Rickettsia typhi.

2. There is currently no vaccine available for murine typhus, but the disease can be effectively treated with antibiotics like doxycycline.

3. Murine typhus can spread from person to person or from humans to fleas, posing a significant risk of direct human transmission.

Which of the statements given above is/are correct?