WHO mixes a heat-sensitive material with the powder or paste of Tilaka to produce "Discolored Tilaka ". If the temperature becomes higher than normal, it will turn white as a signal. By this way, the disease could be easily discovered with lower cost. The secondary spread of the epidemic can be better suppressed. The "Discolored Tilaka " will be experimented in Indian slums as a pilot at first. By spreading to more areas with complex conditions, it will gradually become an important measurement of the health testing. The small Tilaka can play an essential role in maintaining the health of residents in slums, as well as balancing the world health condition.

WHO mixes a heat-sensitive material with the powder or paste of Tilaka to produce "Discolored Tilaka ". If the temperature becomes higher than normal, it will turn white as a signal. By this way, the disease could be easily discovered with lower cost. The secondary spread of the epidemic can be better suppressed. The "Discolored Tilaka " will be experimented in Indian slums as a pilot at first. By spreading to more areas with complex conditions, it will gradually become an important measurement of the health testing. The small Tilaka can play an essential role in maintaining the health of residents in slums, as well as balancing the world health condition.