India

Cholera is presumed to be present in India. Cholera is rare in travelers. Certain factors may increase the risk of getting cholera or having severe disease (more information). Avoiding unsafe food and water and washing your hands can also help prevent cholera. Avoiding unsafe food and water and washing your hands can also help prevent cholera.
Vaccination may be considered for children and adults who are traveling to areas of active cholera transmission.

Recommended for unvaccinated travelers one year old or older going to India.

Recommended for travelers who
Are moving to an area with Japanese encephalitis to live
Spend long periods of time, such as a month or more, in areas with Japanese encephalitis
Frequently travel to areas with Japanese encephalitis
Consider vaccination for travelers
Spending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed nets
Going to areas with Japanese encephalitis who are uncertain of their activities or how long they will be there
Not recommended for travelers planning short-term travel to urban areas or travel to areas with no clear Japanese encephalitis season.

CDC recommends that travelers going to certain areas of India take prescription medicine to prevent malaria. Depending on the medicine you take, you will need to start taking this medicine multiple days before your trip, as well as during and after your trip.
Find country-specific information about malaria.

Rabid dogs are commonly found in India. However, if you are bitten or scratched by a dog or other mammal while in India, rabies treatment is often available. 
Consider rabies vaccination before your trip if your activities mean you will be around dogs or wildlife.
Travelers more likely to encounter rabid animals include
Campers, adventure travelers, or cave explorers (spelunkers)
Veterinarians, animal handlers, field biologists, or laboratory workers handling animal specimens
Visitors to rural areas
Since children are more likely to be bitten or scratched by a dog or other animals, consider rabies vaccination for children traveling to India.

Recommended for most travelers, especially those staying with friends or relatives or visiting smaller cities or rural areas.

Any traveler ≥9 months old arriving by air or by sea without a YF vaccination certificate will be detained in isolation for ≤6 days if they
Arrive within 6 days of leaving an area with risk for YF virus transmission, or
Have been in such an area in transit (exception: passengers and members of flight crews who, while in transit through an airport in an area with risk for YF virus transmission, remained in the airport during their entire stay and the health officer agrees to such an exemption), or
Arrive on a ship that started from or touched at any port in an area with risk for YF virus transmission ≤30 days before its arrival in India, unless such a ship has been disinsected in accordance with the procedure recommended by the World Health Organization (WHO), or
Arrive on an aircraft that has been in an area with risk for YF virus transmission and has not been disinsected in accordance with the Indian Aircraft Public Health Rules, 1954, or as recommended by WHO.
The following countries are regarded by the Government of India as areas with risk for YF virus transmission.
Africa: Angola, Benin, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Congo, Côte d’Ivoire, Democratic Republic of the Congo, Equatorial Guinea, Ethiopia, Gabon, The Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Mali, Mauritania, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, South Sudan, Sudan, Togo, Uganda
Americas: Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Panama, Paraguay, Peru, Suriname, Trinidad & Tobago (Trinidad only), Venezuela
When a case of YF is reported from any country, the Government of India regards that country as an area with risk for YF virus transmission and adds it to the above list.