Public meetings this week look at Affordable Housing Overlay zoning changes, creating a Freedmen’s Bureau and spending opioid settlement money, understanding how the city’s health providers connect and candidates for City Council and School Committee.

The issue of being legally bound to tell authorities if a child or other vulnerable person is at risk of being abused is raising questions about the operation of the city’s planned alternative to police response.

The Covid vaccination rate for children 5 and under is relatively low, but Massachusetts children in that age group have the second-highest rate of infections per 100,000 population, after people 80 and older.

Cambridge is facing much higher and more dangerous temperatures, with predictions that the number of days above 90 degrees could almost triple by 2030 and might be the norm every day of summer by 2070.

In a look ahead at a week of Cambridge and Somerville events, there’s Cambridge Science Festival doings, the annual Fluff festival, clown class, Black Biz, roller disco and John Coltrane from the Cambridge Jazz Foundation.

Cambridge Health Alliance reinstated masking requirements Monday in all “patient care areas” such as doctors’ offices, emergency rooms and hospital wards.

The vaccine, formulated to protect against serious disease, hospitalization and death from recent coronavirus variants, is advised for everyone over six months.

A week of events in Cambridge and Somerville, from Passim’s Campfire Weekend to large walking puppets to Wayne Newton at the 98th Annual Italian Feast of Saints.

Amid a senior care market in which a one-bedroom apartment in assisted living can cost $7,500 a month, Cambridge offers a rare affordable option. But that choice – Neville Place – faces financial challenges.

CIC Health, which tackled testing during the Covid pandemic as an offshoot of the international workshare space provider the Cambridge Innovation Center, is ending operations.