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Rubella meaning - Arogyabhava

Rubella meaning

A contagious viral infection preventable by vaccine and best known by its distinctive red rash.

Rubella, also known as German measles, is a highly contagious viral infection characterized by its distinctive red, spotty rash. This disease is caused by the rubella virus, which belongs to the Togaviridae family. The term "rubella" itself is derived from Latin, meaning "little red," aptly describing its most recognizable symptom. While the rash is the hallmark of rubella, the infection can also cause other symptoms such as low-grade fever, swollen lymph nodes, and joint pain. What sets rubella apart from other viral infections is its particular danger to pregnant women, especially during the first trimester, as it can lead to serious birth defects known as Congenital Rubella Syndrome. The preventable nature of rubella is a crucial aspect of its modern medical context. Thanks to the development of an effective vaccine, typically administered as part of the MMR (Measles, Mumps, Rubella) combination vaccine, rubella has been largely controlled in many parts of the world. This vaccine has transformed rubella from a once-common childhood illness into a rare occurrence in countries with robust vaccination programs, highlighting the significant impact of immunization in public health.

Rubella meaning: Explanation, Formulae and Practice

These topics connect maths with money decisions. Always identify cost price, selling price, principal, rate and time before using a formula.

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Rubella meaning visual revision aid

Practical Formulae

  • Profit = selling price - cost price.
  • Loss = cost price - selling price.
  • Profit percentage = (profit / cost price) x 100.
  • Simple interest = (principal x rate x time) / 100.
  • Amount = principal + interest.

Solved Example

Question: An item is bought for Rs. 500 and sold for Rs. 575. Find the profit percentage.

Working: Profit = 575 - 500 = 75. Profit percentage = (75 / 500) x 100.

Result: Profit percentage = 15%.

Unanswered Practice Questions

Try these yourself before checking notes or calculators.

  1. Find the loss percentage when CP is Rs. 800 and SP is Rs. 720.
  2. Find simple interest on Rs. 5,000 at 8% per year for 2 years.
  3. A shopkeeper marks an item at Rs. 1,200 and gives 10% discount. Find the selling price.

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