Read the passage carefully and give the answer to the next five questions:

India was amongst the first countries in the world to initiate action plans and pro grammes at a national level to attain total reproductive health as a social goal. These programmes called ‘family planning’ were initiated in 1951 and were periodically assessed over the past decades. Improved programmes covering wider reproduction related areas are currently in operation. Creating awareness among the people about various reproduction-related aspects and providing facilities and support for building up a reproductively healthy society are the major tasks under these programmes.

Which of the following is not a Sexually Transmitted Disease?

The correct option is Filariasis.

To understand why this is the correct answer, let's break down and examine each of the options provided to determine if they are Sexually Transmitted Diseases (STDs) or not:

1. Chlamydiasis: This is a common sexually transmitted infection (STI) caused by the bacterium Chlamydia trachomatis. It is transmitted primarily through vaginal, anal, or oral sex, making it an STD.
2. Genital herpes: This is a sexually transmitted infection caused by the herpes simplex virus (HSV, primarily HSV-2). It is transmitted through close skin-to-skin contact, typically during sexual activity, making it an STD.
3. Trichomoniasis: This is a very common sexually transmitted disease caused by infection with a protozoan parasite called Trichomonas vaginalis. It is transmitted during sexual intercourse, making it an STD.
4. Filariasis: Also known as lymphatic filariasis or elephantiasis, this is a parasitic disease caused by microscopic, thread-like roundworms (filarial worms) such as Wuchereria bancrofti. Crucially, it is not transmitted through sexual contact. Instead, it is spread from person to person through the bites of infected mosquitoes (vectors). Since its transmission is vector-borne and not sexual, it is not classified as a Sexually Transmitted Disease.

Therefore, among the given choices, Filariasis is the only disease that is not a Sexually Transmitted Disease.