Medical teams from the Baltimore area have flocked to Haiti to provide much-needed relief to the quake-stricken nation. As we get them, we'll fill you in with on-the-ground updates. Here are a few:

Dr. Carol Ritter, an OBGYN who delivered a baby in Haiti over the weekend, reports on her blog that the clinic she's working in on the Haiti/Dominican Republic border has seven operating rooms packed with medical teams from such countries as Germany, Japan and France. They face daunting circumstances, she writes:

A day filled with many fresh orphans. children losing parents and parents losing children all day. No one wants to stop working. Would give us time to think about it.

Dr. Guesly Delva, a fellow at the University of Maryland School of Medicine’s Institute of Human Virology, left Tuesday for his native Haiti, where he's working at St. Francois Hospital, one of Haiti's oldest hospitals that was nearly completely destroyed. Staff at Catholic Relief Services and IHV, which has an HIV/AIDS program in Haiti, have worked to create a makeshift emergency center out of the rubble.

They thought they would have to shut down, but volunteers helped get food, water and fuel for the hospitals and delivered medical supplies, according school of medicine and CRS spokespeople who compiled details from teams there and gave us this update. Now, three operating rooms are up and running staffed by Haitian, Belgian and Italian teams.

Doctors dragged a refrigerator out of the rubble to try to start a blood bank (with blood from the U.N.), they said. There are lots of amputations and bad burns and major wounds. Their focus: people in critical condition, who could die within 24 hours.