The pathogen of bubonic plague is transmitted through the bite of
Pediculus humanis
Glossina palpalis
Aedes
Xenopsylla cheapis
Which of the following is an opiate narcotic
Person $^{\prime}A^{\prime}$ cannot step out of his house. He has to spend his entire life in sterile isolation otherwise, he would quickly contract a fatal infection. This person has almost no effective immune system. This disease is also called as baby in a bubble syndrome. Identify the disease, this person $^{\prime} A ^{\prime}$ is suffering from
Kala-azar is caused by
Which group of three of the following five statements $(I-V)$ contains is correct regarding beriberi?
$I.$ A crippling disease prevalent among the native population of sub-Sahara Africa.
$II.$ A deficiency disease caused by lack of thiamine (vitamin- $B_{1}$ ).
$III.$ A nutritional disorder in infants and young children when the diet is persistantly deficient in essential protein.
$IV.$ Occurs in those countries where the staple diet is polished rice.
$V.$ The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.
Melanin and lewy bodies occur in the neurons in case of