in martinez, ann reuben, ktvu, channel 2 news. >>> ktvu viewers have been sharing their condolences on our facebook page. you can do the same if you look. just search for ktvu, channel 2. >>> looking to minimize risks due to baby sleep machines. >> you have two options. the sound of the heartbeat and lullaby. >> the study suggests the machines can cause hearing damage to infants. the devices promise to help babies fall asleep. but at their highest levels, it exceeds volumes. >>> losing your temper could be bad for your health. researchers at harvard say the risk of heart attack is five times higher during an angry outburst. they also say the risk is cumulative. if you get angry five times a day, the risk rises exponentially. they say more studies are needed. radar showing showers moving into the south bay. a break in the north bay. the rainfall has been relatively light, but it's been picking up here along the peninsula, out towards burlingame as well. getting moderate rainfall. san jose, you've got some rainfall in millepedes. here we go after midnight, still widely scattered showers.

ann reuben shows us the new online tool that can help track immunization trends. >> reporter: hopingis map will help be a tool to fight the outbreak of the disease. parents can find out just how many kids there are vaccinated. at schools marked with red dots, more than 10% have opted out of immunization. >> these red dot schools are very vulnerable. because so few of their kids are vaccinated. >> reporter: vaccines for things like whooping cough, and polio are required, state law allows people to file a personal belief exemption, and increasing numbers are. >> 98% needs to be immune. if 10% or more opt-out, these diseases will return. >> reporter: according to the map, it currently has the highest number of families opting out of immunization at 50%. >> it's a really tough, complicated issue. >> reporter: school administrators say they too have a delicate balance. respecting parents decision, but also trying to do what they can to protect public health. they require non-immunized kids to stay home. for the new map tool, she says it's interesting. >> does it influence whether i come t

ann reuben shows us the new online tool that can help track immunization trends. >> reporter: hopingelp be a tool to fight the outbreak of the disease. parents can find out just how many kids there are vaccinated. at schools marked with red dots, more than 10% have opted out of immunization. >> these red dot schools are very vulnerable. because so few of their kids are vaccinated. >> reporter: vaccines for things like whooping cough, and polio are required, state law allows people to file a personal belief exemption, and increasing numbers are. >> 98% needs to be immune. if 10% or more opt-out, these diseases will return. >> reporter: according to the map, it currently has the highest number of families opting out of immunization at 50%. >> it's a really tough, complicated issue. >> reporter: school administrators say they too have a delicate balance. respecting parents decision, but also trying to do what they can to protect public health. they require non-immunized kids to stay home. for the new map tool, she says it's interesting. >> does it influence whether i come to the school

in martinez, ann reuben, ktvu, channel 2 news. >>> ktvu viewers have been sharing their condolences on our facebook page. you can do the same if you look. just search for ktvu, channel 2. >>> looking to minimize risks due to baby sleep machines. >> you have two options. the sound of the heartbeat and lullaby. >> the study suggests the machines can cause hearing damage to infants. the devices promise to help babies fall asleep. but at their highest levels, it exceeds volumes. >>> losing your temper could be bad for your health. researchers at harvard say the risk of heart attack is five times higher during an angry outburst. they also say the risk is cumulative. if you get angry five times a day, the risk rises exponentially. they say more studies are needed. radar showing showers moving into the south bay. a break in the north bay. the rainfall has been relatively light, but it's been picking up here along the peninsula, out towards burlingame as well. getting moderate rainfall. san jose, you've got some rainfall in millepedes. here we go after midnight, still widely scattered showers.