Wearing a face mask is mandatory to enter the zoo and all visitors will undergo thermal scanning.
It shall be mandatory for all visitors and staff to wear face masks and violators will be imposed a fine of Rs 200 per head. Persons exhibiting symptoms of cold and fever shall not be permitted entry.
According to officials, apart from lions, the health condition of all the animals is good.
Forest Department officials said that the Hyderabad zoo has provided fecal samples of the lions to the Center for Cellular and Molecular Biology.
The ministry said that the eight lions have been isolated and due care and necessary treatment has been provided.