A 30-year-old lactating mother presents with pain in her left breast and a fever. On examination of the affected side. there is localised erythema, warmth, and point tenderness, and the fluctuation test is positive. Mild axillary lymphadenopathy is or the affected side. and the contralateral breast is normal. What
is the most likely diagnosis for this patient?

A district health officer intends to compare fertility between two communities with markedly different age structures. For each community, he has data on the number of live births during the year and the mid-year population of women aged 15-49 years.
Which of the following is the most appropriate fertility indicator to compare the reproductive performance of these two communities?

A district surveillance officer receives information about the deliberate release of an aerosolized infectious agent in a crowded railway station. Within a few days, several individuals develop severe respiratory illness with a high case-fatality rate. Public health authorities anticipate widespread panic and immediately activate emergency preparedness measures
The causative organism most likely belongs to which category of CDC bioterrorism agents?

A 20-month-old child walks independently, scribbles spontaneously, follows simple commands, and interacts appropriately, but speaks only one meaningful word Before labelling this as an isolated expressive language delay, which assessment should be arranged first?