Nitrofurans are a group of certain antibiotics used in animals (e.g. chickens) to treat infections caused by bacteria and certain protozoa, but their residue can be found in foods such as eggs and meat, which causes health risk in humans (e.g. cancer) There is a danger; therefore, many countries including India have banned their use by bodies like {PWOnlyIAS (FSSAI), because they can live in eggs as metabolites}.

What are Nitrofuran?

These are antibiotics that contain a special chemical structure (5-nitrofurazone ring), such as Furazolidone, Nitrofurazone).

These are broad-spectrums, i.e. many types of bacteria (e.g. Salmonella, E. Coli) and parasites are effective against (parasites).

What do they have to do with eggs?

These were given to treat and prevent diseases in poultry farming.

These remains in the chicken body as medicines or their crack (metabolites) and can also go inside eggs.

Especially, their metabolites (like SEM, AOZ) are found in eggs and other foods.

Health risk and restrictions:

Consuming their remains can be harmful to humans and causes potential health risk (possibly cancer).

Due to this, organizations like Indian Food Security and Standard Authority (FSSAI) and {AGES have banned their use in meat, eggs and seafood}.

In short, the nitrofuran found in egg suggests that the chicken was at some point consumed of these medicines, and it is a food safety concern that is banned to prevent them.