| Chickenpox (varicella) | For 1 week from the date of the appearance of the rash | ‥ | Nil | 21 days |
| Cholera | ‥ | ‥ | ‥ | 5 days |
| Diphtheria | For 2 weeks from the date of the onset of the disease and until two cultures from the throat and two cultures from the nose, taken not less than 24 hours apart, and not within 12 hours of the local application of an antibiotic or chemotherapeutic agent, fail to show the presence of virulent diphtheria bacilli | For 4 weeks from the date of the onset of the disease | 5 days from the last exposure to infection unless a microbiological examination of throat and nose fails to show the presence of virulent diphtheria bacilli | 5 days |
| Dysentry (amoebic) | Until cured | For 4 weeks from the date of the onset of the disease | ‥ | 4 weeks |
| Dysentry (bacillary) | For 4 weeks from the date of the onset of the disease or until three microbiological examinations of the faeces made at intervals of 48 hours fail to show the presence of dysentery bacilli | For 4 weeks from the date of the onset of the disease | Nil | 7 days |
| Enteric fever (typhoid fever, paratyphoid fever) | For 4 weeks from the date of the onset of the disease and until three successive cultures of faeces and of urine, collected not less than 48 hours apart, fail to show the presence of typhoid or paratyphoid bacilli | For 8 weeks from the date of the onset of the disease | Nil | 21 days |
| Hepatitis A | For 7 days from the date of the onset of the disease and until fever subsides | .. | Nil | 25 days |
| Hepatitis B | For 7 days from the date of the onset of the disease and until fever subsides | | | |
| Hepatitis non A or B | For 7 days from the date of the onset of the disease and until fever subsides | | | |
| Leprosy | ‥ | ‥ | ‥ | 7 years |
| Measles (morbilli) | For 7 days from the date of appearance of the rash and until recovery | ‥ | (1) If the disease is epidemic, nil | 14 days |
| | | | (2) If the disease is not epidemic, teachers are not to be excluded, but susceptible children are to be excluded for 14 days from the appearance of the rash on the patient | |
| Meningococcal meningitis | For 24 hours from the commencement of chemotherapy or antibiotic treatment and until cured | For 24 hours from the commencement of chemotherapy or antibiotic treatment and until cured | Nil | 10 days |
| Mumps (epidemic parotitis) | For 9 days from the date of the onset of the disease or until swelling of all involved glands have completely subsided and the patient has returned to normal | ‥ | Nil | ‥ |
| Plague (bubonic or pneumonic) | ‥ | ‥ | ‥ | 6 days |
| Poliomyelitis | For 7 days from the date of the onset of the disease and until fever subsides | ‥ | Nil | 14 days |
| Relapsing fever | ‥ | ‥ | ‥ | 12 days |
| Ringworm | Nil, if under treatment, otherwise until cured | ‥ | ‥ | ‥ |
| Salmonella infection | For 3 weeks from the date of the onset of the disease and until three successive microbiological specimens of faeces, collected at intervals of not less than 48 hours, fail to show the presence of salmonella organisms | For 4 weeks from the date of the onset of the disease | Nil | 7 days |
| Severe Acute Respiratory Syndrome (SARS) | For the period from the time the person is diagnosed as satisfying the World Health Organization's case definition for a suspect case of SARS or a probable case of SARS until either—
•10 days after the resolution of fever, if at that time there is no cough; or •any later time when there is no cough
| ‥ | For 10 days from the time the person (person A) most recently had close contact with a person who is diagnosed as satisfying the World Health Organization's case definition for a “probable” case of SARS (a probable SARS person). However, if person A resides in the same premises as any 1 more probable SARS or persons, until 10 days after the time that is—
•10 days after the resolution of fever in all of the 1 or more probable SARS persons, if at that time none of the 1 or more probable SARS persons has a cough; or •any later time when none of the 1 or more probable SARS persons has a cough
| 10 days. |
| Smallpox (variola including varioloid and alastrim) | Until all scabs and crusts have disappeared | ‥ | If the strain of smallpox is of the variola minor type, and if the contacts are vaccinated within 24 hours of first exposure and thereafter kept under daily medical observation, to be excluded until height of reaction is passed; otherwise for 16 days from last exposure | 16 days |
| Streptococcal sore throat, including scarlet fever | For 7 days from the date of the onset of the disease and until all symptoms have subsided, all abnormal discharges have ceased, and all open lesions have healed | ‥ | Nil | 5 days |
| Typhus | ‥ | ‥ | ‥ | 15 days |
| Whooping cough (pertusis) | For 3 weeks from the date of the onset of typical paroxysms | ‥ | Unimmunised children to be excluded for 14 days from last exposure | 21 days |
| Yellow fever | ‥ | ‥ | ‥ | 6 days |