Major diseases that are transmitted by Honeybee

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You are currently viewing Major diseases that are transmitted by Honeybee

Honey bees are persistently attacked by bacteria, viruses, protozoa, fungi, and troublesome parasitic mites. 

The occurrence of these diseases in honeybees depends upon mainly three factors – infected bees, pathogens, and the environment. Moreover, other insects attack bee equipment.

Disease and pest control require persistent monitoring by the beekeeper.

The bees live in a small, enclosed, moist, dark, and poorly ventilated environment in many cases they are real key triggers. So, it is very important to monitor these factors closely.

Diseases of Honeybee

In order to maintain a disease-free hive, it is important that you know how to recognize healthy brood and bees. It may sound cliché, but prevention is definitely better than cure.

Hygienic practices should be implemented. Avoid discarding comb and propolis or exchange combs in the apiary. Do not squash the bees whenever you are handling the colony.

Avoid spilling sugar and syrup or manipulate the bees late in the season to maintain a clean hive.

Second-hand equipment usually contained a diseased colony. So it is a healthy practice not to use second-hand frames or combs. You should use different hive tools and gloves for each apiary. So, it is necessary to sterilize the comb with 80% acetic acid or PDB.

Swarms should be quarantined at once and be checked for any diseases. Any foreign bee that visits the hive or bee of unknown origin shouldn’t be fed.

In the event you are not sure about a certain disease, you should seek the advice of an experienced beekeeper or a Bee Disease Officer. They can take samples and examine them for certain diseases like acarine and nosema. You can also send samples to the National Bee Unit but it would require you to pay a certain amount.

In case Foul Brood is detected, it should be reported to the Bee Inspector or the National Beekeeping Unit and they will treat the disease for free.

There are a few terrific diseases:

American Foulbrood

diseases that are transmitted by honeybee

This is a bacterial disease during the bee’s larvae and pupae stages. The usual origin is the bacteria that form persistent spores.

Adult bees and contaminated equipment will spread the virus even more. Infected larva changes their color from pearly white to dark brown. They usually die after being capped. Infected AFB colony should be burned at once by a state Bee Inspector.

European Foulbrood

diseases that are transmitted by honeybee - European Foulbrood

This is also a bacterial disease of larvae. Sometimes larvae die even after being capped with AFB. Those infected larvae appear to be twisted in their cells.

Their color changes to off-white creamy and they looked melted. EFB bacteria are not as dangerous as AFB. The infected colony should be treated with TerramycinAE.



This protozoan disease mostly affects Adult bees. Infected colonies build up really slow or even not at all. Infected bees appear weak and usually crawl around the front of the beehive.

Always choose a hive with a good flow of air, to avoid nosema infection. This can be treated by feeding the bees with FumidilAE B in sugar syrup.



This is a fungal disease that affects the larvae. If infected, the larvae’s color turns to chalky white, becomes hard, and finally turns black.

Colonies are usually infected with this disease in early spring when the condition is damp. But colonies are capable of recovering on their own.

Wax Moths

Wax Moths

These are notorious pests affecting beekeeping equipment. They lay their eggs near the wax combs, and when they hatch, they begin to burrow and eat debris in the cells.

Moth usually damage stored supers of combs. You can protect these supers by stacking them no higher than five hive bodies

Tracheal Mites

Tracheal Mites

These microscopic mites affect young bees by entering their trachea or breathing tubes. They block the air exchange and penetrate the walls of the trachea in order to suck blood.

Infected bees become weak and also crawl around the bee entrance. If infected, colonies should be treated with MiticurÆ or special formulations of menthol.

Varroa Mites

Varroa Mites

These mites are copper in color and are about the size of a pinhead. They cling to adult bees to suck their blood. Female mites will reproduce in brood cells.

In time, their offspring suck the blood of the developing bee. Colonies affected by these mites are treated with ApistanÆ, a formulation of fluvalinate.

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